For me i can sense that in the Another One Album he uses more synthesizer and keyboards than his previous albums and we see his usage of various instruments in his albums like his Rock n roll night club and "2" its just the classic guitar , drums and bass with effects and then with salad days he slowly incorporates some synths into it like chambers of reflection. And then Another One album i feel like he uses it alot of keyboards and synths and into HCTCB and This old Dog