For hundreds of years now the island currently known as Sri Lanka has had a thriving musical culture (or cultures, not to politicise the issue). There’s been folk music for as long as there’ve been folks. The various strata of society have refined their ceremonial music, be it sacred or profane. Each ethnic group in each part of the island has hived off its own sub-genres over the centuries. And in the colonial era (eras) a whole new batch of influences arrived, fully formed, ready to be adopted wholesale or adapted and integrated for local use.

Musical luminaries including Mick Jagger, Paul Weller, Ray Davies and Liam Gallagher are lending their support to a campaign to save The 100 Club, the historic music venue in London’s Oxford Street. Soaring business rates of £4000 a month and an annual rental bill of £166,000 have driven the club to the brink of bankruptcy, and unless the savethe100club campaign proves successful, it faces closure by Christmas.

Another sold-out gig, another standing ovation, another memorable night. A sprightly 89 years old, the vocal pipes may not be quite so silky, but on the first of a three-night run at Ronnie Scott's, Jon Hendricks – dubbed the “James Joyce of jive” by Time magazine - still had the chops to show why he's considered one of the most original and influential singers in jazz.

“Hot sweaty tight jammed in can’t breathe heart pumping centre of the universe Monday night action in town. Racing down to Bar Rumba at midnight through the blaring siren wailing darkness of south London to the tinsel town wet streeted fakeness of the West End and the That’s How it Is sessions, Gilles Peterson, James Lavelle, UFO, Patrick Forge, Roni Size spin…” [sic] Peter Williams, London, 1994.

A member of Miles Davis's legendary second quintet (“arguably Miles's best ever group” according to the Penguin Jazz Guide); a composer of standards (“Watermelon Man”, “Dolphin Dance”, “Maiden Voyage”, “Cantaloupe Island”) and soundtracks (Antonioni's Blow-Up, Bertrand Tavernier's Round Midnight); winner of over 10 Grammy Awards, the first for his 1983 hit single “Rockit”, the most recent for his magnificent 2007 Joni Mitchell tribute album River: The Joni Letters (one of only two jazz recordings to win the coveted Album of the Year award, the other being Getz/Gilberto over 40 years ago). Whichever way you cut it, pianist Herbie Hancock is one of the lodestars of American music, whose influence reaches out far beyond the narrow confines of jazz. A brilliant extended set from this bona fide jazz icon brought a capacity RFH audience to its feet.

And we're off. Marking the official start of the London Jazz Festival, “Jazz Voice: Celebrating a Century of Song” provided a superbly paced and brilliantly conceived curtain-raiser. Hosted by Scottish actor Dougray Scott and presenting vocalists from both sides of the Atlantic, this paean to the art of song featured Guy Barker's consummate, high-spec arrangements lovingly performed by his hand-picked orchestra.

It's a curious fact that, for whole swathes of the music-buying public, their jazz collection has never grown beyond the ubiquitous Kind of Blue. OK, it's a seminal masterpiece which continues to sell like shovels in a snow storm. But why stop there? Perhaps the music's slightly arcane nomenclature has something to do with it: modal jazz, free jazz, fusion, bebop. Where to start?

As the London Jazz Festival approaches, it's an unlikely fact worth noting that some of the bestselling instrumental jazz records of the last few years have been from Ethiopia. Ethiopian jazz composer Mulatu Astatke, now 66, is the best-known practitioner and enjoying an Indian summer. A key feature of the 2007 The Very Best of Éthiopiques compilation, once heard his music is not easily forgotten.