Humphrey Lyttelton, who has died at the age of 86, was an influential jazz musician, an acclaimed broadcaster and a raconteur and wit.
He formed a school quartet shortly after he began playing the trumpet at the age of 15, and was still touring earlier this year.
Millions of listeners knew him as the host of BBC Radio 4's series I'm Sorry I Haven't a Clue, the self-styled "antidote to panel games".
He had presented the programme since 1972, but the most recent series was cancelled when he was admitted to hospital.
I'm Sorry I Haven't a Clue has also featured much-loved comedians such as Barry Cryer (centre) and Willie Rushton (second right).
Lyttelton formed a band with the clarinettist Wally Fawkes in 1948 and played at the Nice Jazz Festival that year.
Fellow jazz musician Louis Armstrong described Lyttelton (left) as "that cat in England who swings his ass off".
The trumpeter (right) composed more than 120 original works for his band and opened a jazz club in central London in the early 1950s.
Lyttelton (second left) presented many programmes about the arts and culture, and appeared on BBC Two's Who Said That? in 1976.
Lyttelton (second left) was also heard on radio quiz Jazz Score, alongside the likes of Benny Green (centre) and Ronnie Scott (right).
The star received a lifetime achievement honour from the British Jazz Awards in 2000, but at one stage he turned down a knighthood.
Lyttelton also worked as a cartoonist for the Daily Mail and was the author of several books about music.