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Dynamics & Expression

Dynamics

Definition

Dynamics are the levels of loudness in music and the changes between them. They are written as Italian words and letters such as p (soft) and f (loud), and as hairpins for getting gradually louder or softer.

Dynamics are the louds and softs of music: how loud or quiet each note, phrase or section should be, and how the volume changes. Composers write them with Italian words and their abbreviations, printed below the staff (between the two staves in piano music), and with wedge-shaped hairpins for gradual changes.

The dynamic marks

From softest to loudest, the standard levels are:

Six bars of 2/4 on the treble staff, each with the same figure: eighth notes G and C and a quarter-note E. The bars are marked pianissimo, piano, mezzo piano, mezzo forte, forte and fortissimo in turn.
One original three-note figure played six times, a rung louder each time: pp, p, mp, mf, f, ff.

Composers sometimes go further. ppp and fff are fairly common, and a few scores go beyond: Tchaikovsky wrote pppppp in his Sixth Symphony. The letters are printed in a special bold italic type, which keeps them from being confused with note names.

Changing the level

  • Gradually: crescendo (cresc., or an opening hairpin) grows louder; decrescendo, also called diminuendo (decresc., dim., or a closing hairpin), grows softer. Morendo fades away to nothing.
  • Suddenly: a new mark changes the level at once, and subito p or subito f makes the suddenness explicit.
  • On one note: sforzando (sfz, sf) gives a single note a sudden strong attack, and fortepiano (fp) is loud, then immediately soft.

Dynamics are relative

A dynamic mark is not a decibel reading. Forte on a solo flute is softer than forte for a full orchestra, and forte in a Mozart sonata is lighter than forte in a big Romantic concerto. What matters is the contrast inside the piece: mp should sound clearly softer than mf, and ff louder than f, with room for any still louder markings in the score. The room, the instrument and the other players all change the actual volume.

Dynamics at the piano

The piano's full name, pianoforte, means "soft-loud": unlike the harpsichord before it, it could play soft or loud depending on touch. Loudness comes from the speed of the key going down, not from pressing harder once it is down. Use relaxed arm weight for loud playing and a light touch close to the keys for soft playing. Once a note is struck it can only fade, so you shape a crescendo across several notes, never on one held note.

The Musical terms & signs chart lists the common dynamic signs, Match the terms and the Music word search test the basic words, and Voicing and Balance shows how to play two dynamics at once: a louder melody over a softer accompaniment.

Common questions

What are dynamics in music?

Dynamics are how loud or soft the music is played, and how that changes. They are marked with Italian terms such as piano (soft) and forte (loud), their letter signs (p, f, mp, mf, pp, ff), and hairpins for gradual changes.

What is the loudest dynamic marking?

Of the six standard levels, fortissimo (ff) is the loudest. Composers can add more f's (fff, ffff), but there is no fixed top: each piece sets its own scale.

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