"Sonic Undertow", the brainchild of keyboard player and composer Chris Hoard, has been described as "a surprising blend of prog and hip-hop", but only two tracks ("Time To Move On" and "Free Da Radicals") have rap vocals. The rest of the CD, apart from a few spoken word introductions by poet Ekow Asare, is an instrumental blend of fusion, exotic fusion and progressive rock with a few urban rhythms thrown in here and there for a more modern feel. Guitar fans will rejoice at the inclusion of Allan Holdsworth's six string improvisations on eight of the tracks, as he lays out legato lines in his own indomitable style. Hoard states, "The planet's only musician I considered capable of realizing the kind of melodic ideas and intensity I sought luckily was the one I convinced to take on the job. Certainly without Holdsworth's huge contributions to Riptyde, it would not have been what it became. Much of the music was originally crafted with the intention of showcasing the singular talents of master guitarist Allan Holdsworth."
|04:38||Time To Move On||Vocal|
|06:30||Time Off In Tannu Tuva||Instrumental|
|04:03||Free Da Radicals||Vocal|
|05:00||Pearls Of Intuition||Instrumental|
|06:12||Long Voyage Home||Instrumental|
|05:04||Forgotten Planet Suite - Part I||Instrumental|
|04:14||Forgotten Planet Suite - Part II||Instrumental|
|Allan Holdsworth||Guitar Solos, Guitar Chords, Baritone Electric Guitar, Piccolo Electric Guitar|
|Chris Hoard||Piano, Synths, Chapman Stick, Bass, Samples, Loops, Karma, MIDI Harpsichord, Mellotron, CS80, Synth Bass, Sampled Tuvan Voices, MIDI Piano, 8-String Stick, 10-String Stick, NS Stick, Production, Engineering, Sound Design, Programming, Cover Design, Photography, Art Direction|
|Amon Freon||E-Drums, Loops, Samples, Effects, Sound Design, Programming|
|Ekow Asare||Voice, Spoken Narration|
|4Zone||Rap Vocals on Tracks 2 & 5|
|Alan Porzio||Vocoded Ocean Effects, Additional Sampling, Sound Design|
|Mark Gleed||Synth Cameos, Psychotic Pteradactyls|
|Tom Warner||Karma Programming|
|Mick Porter||Cover Design, Photography|
|Recorded at the Men's Crisis Center South, Laguna Hills, August 2001 through April 2004 and the Cal Heights Garage in 1994; additional recording and mixing at undisclosed locations in The South OC.
Mastered at Bernie Grundman Mastering, Hollywood, CA.