The two volumes of "Heliocentric Worlds", recorded 7 months apart in 1965, represent perhaps one of greatest chapters in Sun Ra's legacy, bringing together his immense orchestration skills with future-leaning free jazz, allowing his players expanse inside disciplined compositions that reflect on both space and the then-new freedom explored by jazz soloists.

1974 recordings at WKCR in NYC from the quintet of Charles Brackeen (flute & sax), Ahmed Abdullah (trumpet), William Parker (bass), Roger Blank (drums) and Tony Waters (percussion), beautifully recorded and essential free improvisation.