In 2016, the current trio of Tangerine Dream, Thorsten Quaeschning, Ulrich Schnauss and Hoshiko Yamane, started to perform lengthy tracks of largely improvised music -- thus returning to the roots of Tangerine Dream of the seventies, when most TD concerts had been improvised for the most part. Thorsten Quaeschning describes these 'sessions' as a new form of real time composing. A moment of coming together as individual musicians with two pre-calls: the tempo (as defined in bpm) and the first note.
The very first of these session, recorded in the famous Dierks studio, had already been released as part of the Particles album. Most of the live concerts from 2016 on consisted of a set of classic TD compositions (similar to what TD did live during the recent 20 years) plus an improvised session. Two of these sessions from early 2017 are assembled on The Sessions I, the first release of a series of similar albums that so far consists of: