Jazz is traditionally heard in dark, smoke-filled rooms but this year's festival in Cork was a bit different - the introduction of the smoking ban meant the jazz was played in smoke-free pubs and clubs.
Organisers say the festival weekend went off without a hitch and even "hardened smokers" complied with the no-smoking regulations.
The third-largest jazz festival in Europe delivered a €21 million windfall to the Cork economy as more than 40,000 revellers flocked to the city.
The festival got off to a flying start on Friday at the Everyman Palace theatre with a double bill featuring US jazz and blues greats Jimmy Smith and his band and Masters of the Groove.
Other acts which impressed the crowds included the Mingus Big band, the Terence Blanchard Sextet, the Cannonball Adderley Legacy band and the Richard Galliano Trio.
Fourteen stages, 120 bands and more than 1,000 musicians from 26 countries featured in the four- day festival which ends today.
More than 70 pubs and clubs offered rhythm and blues and roots music throughout the weekend.
Fringe events included a jazz-themed weekend at the Triskel Arts Centre and the Kino art-house cinema.
Next year promises to be the biggest jazz festival to date as organisers plan to increase events to coincide with Cork's year as European Capital of Culture.
The Cork Jazz Festival first took place in 1978.
Jazz buff Pearse Harvey suggested the idea of the festival to Ray Fitzgerald and Jim Mountjoy who was marketing manager of the Metropole Hotel at the time. Players Wills sponsored the event to the tune of £5,000.
The festival has hosted many of the jazz greats including Ella Fitzgerald, Oscar Peterson, Dizzy Gillespie, Lionel Hampton and Buddy Rich.