The performances are all standards, bar one completely improvised piece called 'Sound'.

It is often completely improvised, and sometimes competitive in nature.

The concerts, like the group's sole album, consisted of completely improvised music.

All their shows were completely improvised with no written music.

The show is completely improvised by the ensemble cast without the use of any scripts.

The familiarity will pay off, because the music will be completely improvised.

Stories are developed as a collective where frequently the dialogue is completely improvised.

Most of the band's music is completely improvised, with little or no overdubs.

The set was completely improvised, but broke down into distinct parts.

Nearly all the sketches are completely improvised in each recording session.