I haven’t seen any APP in the used bins (or new) in years, years I tell you. I think the members of Ambrosia were among the musicians who played on “Tales of Mystery and Imagination” (the first one).
Yeah IIRC he was their producer for their first two records. He is a legend in that category by working with the The Beatles, The Hollies, Ambrosia, Pink Floyd, Al Stewart etc. I think the last thing he did music wise is back in 2004 “A Valid Truth”. If he has put out something else I have not seen it. I have seen ads for them on tour so I know he is still out there.