| MORDENT | Rapid alteration of a musical note |
| LAPIDARIST | Jeweller making a rapid alteration in the catalogue (10) |
| TRUMP | From an alteration of a word for a victory or a win, a playing card of the suit chosen to rank above the others; hence, an excellent person or first-rate fellow (5) |
| SUSTAIN | The prolongation of a musical note by means of electronics or the right pedal on a piano, for example (7) |
| VIBRATO | Rapid fluctuation of a musical note's pitch |
| FERMATA | Prolongation of a musical note |
| STEM | Part of a musical note |
| TIMBRE | Sound quality of a musical note |
| TENUTO | Of a musical note or chord, held for or beyond its full time value (6) |
| TETTETE | A shortening and alteration of a Cockney rhyme that is used as an informal word for "hats" (7) |
| SASHAY | An alteration of a French word for a gliding dance step that describes an ostentatious yet nonchalant walk or glide along; or, an excursion (6) |
| LITTLEREDHEM | Slight alteration of a Santa suit? |
| REORG | Major alteration of a business structure, for short |
| MUTANT | Cell that carries an alteration of a gene (6) |
| MOD | Alteration of a video game, in gamer lingo |
| NATURAL | Synonym of organic, pure or raw; a buff colour; a person of innate talent; a white piano key; or, a musical note, neither flat nor sharp, denoted J (7) |
| LAWN | From an alteration of dialect for "glade" or "pasture", a word for an area of grass or camomile in a garden or park; or, a fine cloth of cambric, cotton or linen (4) |
| SYMBOL | An emblem or ideogram, such as a musical note, pictorial icon on a map key/legend or a letter representing a chemical element (6) |
| FLAT | A character that lowers a musical note a semitone (4) |
| TWEAK | A sharp pinch or pull; press slang for a minor alteration of copy; or, a fine adjustment to a mechanism (5) |
