The radio show 1A on National Public Radio released a wonderful documentary on Lou Harrison, in which Bill Alves is interviewed extensively. The show was scripted by Joe Horowitz and features performances by the PostClassical Ensemble and the Leipzig Radio Symphony among others. You can listen to the show here: https://the1a.org/segments/more-than-music-lou-harrison/. Joe Horowitz, has also produced a PostClassical Ensemble documentary film, “Lou Harrison and Cultural Fusion,” distributed by Naxos.