Alan Barnes and Bruce Adams, the Karen Sharp Quartet and the JTQ are some of the main acts to appear at this month's Swansea International Jazz Festival in Wales. And coming up in July during the Wigan Jazz Festival classic jazz singer Claire Martin OBE and pianist Dave Newton are among the headliners heading to Lancashire. Both these summertime festivals among a range of elements focus on a shared if not always overlapping interest in different interpretations of heritage bop, the Great American Songbook, straightahead and big band-derived approaches. Other styles also make their presence felt beyond this selection of some of the established names involved. Simon Spillett with his big band playing the music of Tubby Hayes hit both Swansea (24 June) and Wigan (8 July). Claire Martin, top left, and Dave Newton play Wigan on the festival's opening night
– Dates for Swansea are 23-26 June. Further information
– Dates for Wigan are 7-10 July. Updated Wigan info
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