Here's all the links:
While most of those guys came from jazz and classical backgrounds, at the time of its release this album was perceived as baroque or underground rock(or perhaps even 'progressive', way before that description became codified into a genre), maybe even 'fusion', which was at that time still sorting itself out(Billy Cobham played drums on this). But in hindsight, you can see this album(along with Paul Horn's "Inside")as the birth of New Age music.
Towner, Moore, and Paul McCandless jumped ship early on to form 'Oregon', incorporating elements of what was to be known as World Music...
Then these guys moved to the German EMC label to do solo work and ensemble combinations...
German bassist Eberhart Weber(featured on that last album)worked in similar musical territory, but with more impressionistic flavors...
Now, this next stuff may be a bit more whimsical than what you're looking for, but they're very unique, Freeway Philharmonic...
Chapman Stick player Larry Tuttle and violist Novi Novog helmed that ensemble; she's done an astounding number of notable sessions, best known would be the solos on the Doobie Brothers' "Black Water" and in the string section on Prince's "Raspberry Beret". FP morphed into String Planet years later...
Because John McLaughlin was on that Clarke piece, you might want to check out his Shakti albums.