"An explosive late '70s set with underrated composer, multi-instrumentalist, and arranger Sam Rivers leading a strong quartet. While bassist and cellist Dave Holland and percussionist Thurman Barker merged to form a strong, challenging rhythm section, Rivers and Joe Daley, playing tuba and baritone horn, worked together to create instrumental dialogues in sequence. Their array of contrasting voicings, with Rivers on tenor and soprano sax and flute, makes for compelling listening."

Disc has a handful of faint marks.

• 1 Shockwave
• 2 Torch
• 3 Pulse
• 4 Flux
• 5 Surge