Streetwise's mission is to give homeless people an opportunity to get involved in music-making, which throws down all kinds of challenges to the writing and production team.

Time Flows is built on the quirk of fate that led baroque composer George Frideric Handel and psychedelic guitar god Jimi Hendrix to live next door to each other in London's Brook Street; although of course Handel was long gone by the time Hendrix dragged his Stratocaster up the stairs.

The plot, if there was one, passed me by, as the production leapt back and forth across the centuries, though at least the piece was an opportunity to chuck in a batch of Hendrix's greatest hits and some choice morsels of Handel. Jason Pennycooke played a svelte master of ceremonies, introducing protagonists Mary and Sam. Mary was looking for Handel's house and Sam was a Hendrix fan. A romantic denouement was clearly on the cards. To guarantee audience participation, the action took place in adjoining spaces in a warehouse, and every few minutes a squad of white-suited "guides" roused everybody from their seats and herded them into the adjoining room.

In the Handel room, Katherine Manley and Rowan Fenner played a pair of squabbling Handelian divas and, with a troupe of musicians from the London Handel Orchestra, breezed elegantly through selections from Dixit Dominus, Alessandro and more. The Himalayan task of impersonating the Jimi Hendrix Experience fell to the Thomas Gray Band. They handled the instrumental stuff pretty well (Wind Cries Mary, Purple Haze, Voodoo Chile et al) but Gray's singing was in the wrong ballpark altogether. He might have been better at singing Handel. Time Flows is a promising idea, but its implications haven't been developed.