Jim Richardson/Jim Mullen/Don Weller/Darren Altman

Veteran British bassist Richardson's worked with the best of the best over an illustrious if undersung career, clocking up sessions with Chet Baker, Dexter Gordon and Keith Tippett. Here it's his thumping Mingus style that powers a cracking quartet alongside Scottish jazz guitar great Mullen, sax giant Weller and fine drummer Altman.