| VAMPED | Improvised in jazz |
| JAMMED | Improvised, in a way |
| SCATTED | Improvised, in a way |
| ADHOC | Improvised in Riyadh occasionally |
| ADLIB | Something improvised in speech, music, etc. (5) |
| CRYSTALSET | Receiver improvised in WWII foxholes |
| TRIATHLON | Al Hirt improvised in fashion event with three stages (9) |
| BREAKS | Starts of horse races; caesuras in prosody; short improvised solo passages in jazz; mini-holidays; or, pauses for refreshments (6) |
| SCAT | Type of wordless improvised singing in jazz in which the voice imitates a musical instrument (4) |
| SELLERS | Before becoming an actor- comedian, Who played drums in jazz and dance bands in England in the early 1940s? (5,7) |
| PETER | Before becoming an actor- comedian, Who played drums in jazz and dance bands in England in the early 1940s? (5,7) |
| SEWINGMACHINES | Singer offering note in jazz music feature in same production (6,8) |
| TRADINGESTATES | What's popular in jazz develops slowly in commercial areas |
| GROOVE | Shallow corner in bouldering and mountaineering; a track cut into a record for a stylus; or, the rhythm in jazz, funk or soul (6) |
| AXE | Word for a hatchet since Anglo-Saxon times; or, from the 1950s, a slang term for an electric guitar in rock music or a saxophone in jazz (3) |
| LIONELHAMPTON | US musician born in 1908 known for his use of the Vibraphone in jazz (6,7) |
| ZINC | Element taking part in jazz in concert (4) |
| RIFF | Short repeated phrase in jazz in order if familiar (4) |
| LAINE | In 1976, who became the only singer to have received Grammy Award nominations in jazz, popular and classical categories? (4,5) |
| CLEO | In 1976, who became the only singer to have received Grammy Award nominations in jazz, popular and classical categories? (4,5) |
