They have a daffy name and all look incredibly young, but Porpoise Corpus make seriously good music. Their debut album contains many impressive moments and last night they sounded even better. A sextet with two saxes, guitar, piano, bass and drums, they played stylish, fast-moving, episodic originals that held the interest as securely as the ever-changing scenery from a train window.

Thrash-rock passages by drummer Guy Wood and bassist Spencer Brown gave way to interweaving sax lines or gentle, semi-classical solo-piano meandering but every change of pace was linked by strong logic. Some ingenious melodic twists, especially for the saxes, also flickered with rare jazz elegance.

Pianist-composer Dave O'Brien, who did the arranging, can take a bow. Beneath his overgrown Beatle haircut ticks a jazz brain of unusual vision and originality. British writing of such intelligence and whimsical, anything-is-possible spirit has not been heard since the young Django Bates was first unleashed.

Frameworks as fine as these called for superior soloists. Jonathan Bratoeff, extracting a remarkably warm, round tone from his solid-body guitar, lyrical altoist Tom Ward and fluent tenorist Tom Challenger all played brilliantly. O'Brien kept a lower profile, but his understated explorations were no less fascinating. Keep an eye on him.