Modern A Cappella: Techniques, Arranging Tips, and Popular Genres

Modern a cappella, often referred to as contemporary a cappella, is a dynamic vocal art form that has evolved far beyond traditional unaccompanied singing. Rooted in early vocal ensembles but propelled by the innovations of the 20th and 21st centuries, it incorporates beatboxing, vocal percussion, looping, and studio-enhanced textures. This article delves into the techniques, arranging conventions, and popular genres that define modern a cappella, offering a comprehensive guide for enthusiasts, performers, and educators alike.

Overview

Modern a cappella is distinguished by its rigorous emulation of instrumental sounds using only the human voice. It typically features a rhythm section (vocal percussion or beatboxing), bass lines, chordal harmony, and lead vocals, often arranged to mimic a full band or orchestra. The genre gained mainstream visibility through groups like Pentatonix, The Real Group, and Naturally 7, and through media phenomena such as the Pitch Perfect film series. Unlike traditional choral music, modern a cappella emphasizes groove, rhythmic precision, and a pop-driven aesthetic, while also borrowing from jazz, R&B, hip-hop, and electronic dance music.

How It’s Notated

Notation for modern a cappella varies widely, from informal lead sheets to fully orchestrated scores. The most common approach is to use standard staff notation with vocal parts on separate staves, often employing a vocal percussion line that uses non-traditional symbols to represent drum sounds. For instance, beatboxing notation may use ‘B’ for kick drum, ‘T’ for hi-hat, and ‘K’ for snare, though these are not standardized. In academic settings, composers often use rhythmic notation on a single line with syllables written beneath. Arrangers also rely heavily on chord symbols above the staff for improvisational flexibility. With modern digital audio workstations (DAWs), many groups create charts in software like Sibelius or Finale, often pairing them with audio guides for rehearsal.

How It’s Performed

Performance in modern a cappella demands multifaceted skill: pitch accuracy, rhythmic timing, and the ability to produce a wide spectrum of timbres. A performer might be responsible for a lead vocal that must blend with a vocal percussionist who mimics drum patterns using only lips, tongue, and breath. Bass singers must produce low, resonant tones, sometimes using subharmonic techniques. Chordal singers often use vowel matching to blend into a unified color, similar to choral practice but with a more amplified, contemporary edge. Live performances frequently rely on microphones and looping pedals, enabling one singer to layer multiple parts in real time—a technique popularized by artists like Ed Sheeran and Jacob Collier.

How It Works

The mechanics of modern a cappella rely on psychoacoustic principles. The audience perceives a ‘bass’ even when the actual fundamental is missing, due to the missing fundamental effect—the brain reconstructs the pitch from overtones. Arrangers exploit this by having a bass singer sing a tone that is an octave lower than a harmonic series, often combining with other voices to create a ‘virtual’ bass that is lower than any individual singer. Vocal percussion produces rhythmic noise whose frequency content mimics that of a drum kit, and when combined with consonants and vowel shapes, it creates a convincing groove. Looping hardware and software allow for live layering, while studio effects like reverb and auto-tune are often used in recordings but can also be reproduced live with pitch correction and harmonizers.

Origin / Etymology

The term ‘a cappella’ originates from Italian, meaning ‘in the manner of the church’ or ‘in chapel style,’ referring to unaccompanied sacred vocal music. Its modern usage, however, has shifted meaning. The word ‘modern’ attached to a cappella denotes a departure from the classical or folk traditions into a more commercial and technically demanding idiom. The phrase ‘modern a cappella’ became prevalent in the late 20th century as collegiate and professional groups began performing popular music without instruments, and with the advent of beatboxing in the 1980s, the genre gained its distinctive percussive identity. The term ‘vocal percussion’ was coined to describe this element, while ‘beatboxing’ is a more colloquial synonym.

Historical Context

Modern a cappella has roots in several historical currents: the barbershop quartets of the late 19th century, which focused on close harmonies; the doo-wop groups of the 1950s, which added a rhythmic bass and street-corner vocal backing; and the collegiate a cappella movement that began at Yale University in 1909 with the Whiffenpoofs, but which really expanded in the 1970s and 80s as groups imitated pop songs without instruments. The 1980s saw the rise of the vocal pop and jazz ensembles like The Manhattan Transfer and The Real Group, who incorporated complex jazz chords and improvisation. The 1990s and 2000s brought the influence of pop and hip-hop, with groups like Rockapella and Naturally 7 using beatboxing and vocal turntablism. The current era, marked by Pentatonix’s Grammy-winning performances and competitions like The Sing-Off, has solidified modern a cappella as a global phenomenon.

Defining Characteristics

Several stylistic traits distinguish modern a cappella from traditional choral music: (1) Use of vocal percussion and beatboxing to emulate a drum kit; (2) Heavy reliance on a bass singer to provide a harmonic foundation; (3) Arrangements that often follow pop song structures—verse, chorus, bridge—rather than classical forms; (4) Frequent harmonization of melody lines in parallel thirds or sixths, but also with extended jazz chords; (5) Employment of electronic effects, both live (looping, vocoders) and in studio (reverb, EQ); (6) A focus on groove and rhythmic drive, often with syncopated patterns; (7) The blending of diverse genres: pop, rock, R&B, gospel, jazz, hip-hop, and even EDM. Modern a cappella groups often arrange their own material, using a collaborative process that is a hallmark of the genre.

Where You’ll Encounter It

Modern a cappella is ubiquitous in contemporary media and education. It is a staple of collegiate music programs, with hundreds of university ensembles performing on platforms like YouTube and Spotify. It appears in major film and television soundtracks (e.g., Pitch Perfect, The Sing-Off), in car commercials, and in virtual gaming soundtracks. The genre is also prominent in the choral world, with contemporary a cappella competitions such as the International Championship of Collegiate A Cappella (ICCA) and the Harmony Sweepstakes. Beyond the West, modern a cappella has taken root in the Philippines (The Filharmonic), Sweden (The Real Group), and India (Voctave). In professional settings, artists like Bobby McFerrin and Take 6 have demonstrated its artistic depth.

Key Figures

Several individuals and groups have shaped modern a cappella. Deke Sharon, often called the ‘father of contemporary a cappella,’ has produced the ICCA and arranged and music-directed Pitch Perfect. Singer, arranger, and producer Peter Hollens popularized solo a cappella through his YouTube covers. The group Pentatonix, led by Scott Hoying, won the third season of The Sing-Off and has won numerous Grammys for their arrangements and performances. Beatboxer Kevin Olusola and singer Kirstin Maldonado are key members. The Real Group from Sweden, founded by Anders Edenroth, has been influential in jazz a cappella. Bobby McFerrin, known for his improvisational ‘Don’t Worry, Be Happy,’ has demonstrated the expressive possibilities of the voice. Other notable arrangers include Ben Bram, who has worked with Pentatonix, and the late Ward Swingle of the Swingle Singers.

Landmark Works

Defining pieces of modern a cappella include: Pentatonix’s arrangement of Daft Punk’s ‘Medley’ (2013); The Real Group’s Pass Me the Jazz (1985); Naturally 7’s Wall of Sound (1999); Take 6’s Spread Love (1988); and Bobby McFerrin’s improvisational Circle Songs (1997), which explores vocal polyphony. Contemporary arrangements of pop hits like Beyoncé’s ‘Halo’ or Sia’s ‘Chandelier’ have become staples in many groups’ repertoires, often arranged by Ben Bram or Deke Sharon. These works demonstrate the genre’s ability to transform popular music into intricately voiced vocal landscapes.

Common Misconceptions

A common misconception is that modern a cappella is synonymous with barbershop or doo-wop. While these are precursors, modern a cappella is a distinct genre that incorporates studio effects and beatboxing. Another myth is that all a cappella is performed completely ‘live’ with no electronic enhancement; in reality, many performances use microphones, pitch correction, and effects. Some believe that a cappella is only for pop music, but it extends to jazz, gospel, and even classical. Additionally, some think that beatboxing is easy and merely imitates sounds, but skilled beatboxers execute complex polyrhythms using advanced techniques like inward breathing and the ‘lip roll.’ Finally, there’s a misconception that modern a cappella is a recent fad; its history spans over a century, with roots in early collegiate groups and the vocal jazz scene of the 1940s.

Timeline

– 1909: The Whiffenpoofs founded at Yale, the first collegiate a cappella group of its kind, originally performing barbershop.
– 1930s-40s: Swingle Singers experiment with jazz and classical crossovers.
– 1950s: Doo-wop groups like The Orioles and The Flamingos popularize vocal harmony in urban settings.
– 1970s-80s: Collegiate a cappella spreads; groups like The Real Group (1984) and Rockapella (1986) emerge.
– 1980s-90s: Beatboxing becomes a core element; MTV and television boost visibility.
– 2000s: The Sing-Off premieres, bringing mainstream awareness; YouTube provides global platform.
– 2010s: Pentatonix wins The Sing-Off (2011), then becomes a global superstar; Pitch Perfect franchise (2012-2017); increased use of live looping.
– 2020s: Modern a cappella integrates AI and virtual collaboration, with groups performing remotely.

Legacy & Influence

Modern a cappella has influenced not only the music industry but also music education and vocal technique. It has popularized the concept of the voice as a complete orchestra, inspiring instrumentalists and vocalists alike. The genre has led to the development of new pedagogical methods, such as those by Deke Sharon, and has fostered a vibrant online community where arrangements and tutorials are shared. It has also driven innovation in vocal effects and looping technology. With its ability to traverse genres and appeal to diverse audiences, modern a cappella continues to evolve, ensuring its relevance in the future of music.

In conclusion, modern a cappella is a multifaceted art form that merges tradition with innovation. Its techniques, arranging practices, and genre-spanning repertoire have made it a cornerstone of contemporary vocal music. Whether on stage, in the studio, or in educational settings, modern a cappella demonstrates the boundless potential of the human voice alone.