Ionian mode

The Ionian mode is the diatonic scale that corresponds to the modern major scale, built on a sequence of whole and half steps (W‑W‑H‑W‑W‑W‑H). It serves as the first mode of the seven traditional church modes and is foundational in Western tonal music.

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Major third

A major third is a musical interval spanning four semitones, defined by a frequency ratio of 5:4 in just intonation and 400 cents in equal temperament. It forms the upper structure of major chords and is a cornerstone of Western tonal harmony.

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Sustain Pedal

The sustain pedal, also known as the damper pedal, is a foot-operated lever on piano and keyboard instruments that lifts the dampers, allowing strings to vibrate freely. This creates a resonant, lingering sound that shapes musical expression across many genres.

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Vibraphone

The vibraphone is a tuned percussion instrument featuring metal bars and motor‑driven resonators that produce a vibrato effect. It is a staple of jazz ensembles and increasingly appears in classical and popular music.

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Celesta

The celesta is a keyboard percussion instrument that produces a soft, bell‑like tone. Invented in the late 19th century, it is a staple of orchestral and film music, noted for its ethereal sound in works such as Tchaikovsky’s “Dance of the Sugar‑Plum Fairy.”

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