Oscar Peterson - Big 6 At Montreux (1975)

This LP, recorded at the 1975 Montreux Jazz Festival, is a festive jam session that features pianist Oscar Peterson, vibraphonist Milt Jackson, guitarist Joe Pass, Toots Thielemans on harmonica, bassist Niels Pedersen and drummer Louie Bellson. The principles have plenty of solo space on two blues, the ballad "Here's That Rainy Day," and the standard "Poor Butterfly." Since these players are competitive in addition to being complementary, some sparks fly as the musicians challenge each other.