Spontaneous collaborative composition is the name of the game at Semper Thursdays this week. Gallimaufry regular Laurence Clutson (Family Business house band, Space Jams) joins Semper on stage to perform a full show of uninterrupted improvised music. This monthly favourite is a challenging feat for the band who, like the audience, will be hearing this music for the first time at this show.

Free entry, 9pm start. For more information, visit Headfirst.