 His style encloses the principal traits characterizing the evolution from Terry Riley's and Morton Subotnick's minimalism to the form of electronic new-age suite.Thom Brennan's music is realized almost exclusively with synthesizers, with rare use of samples and without any acoustic instrument.His production consist mostly of beatless soundscapes; however, in a few works which he himself calls "rhythmic journeys", Brennan employs percussive sounds and, more frequently, rhythmic synth patterns or timbral movements.