The slow movement is really glorious how can a young man have written it.The second half has surprising harmonies too. I can't believe how early this really characterful music is from Mozart .December 1773 when Mozart was 17 .He was inspired by Michael Hadyn quintets. It makes me wantto go look for symphonies, divertiment,concerti from before 1776 when he turned 20. I will especially have to devote some time to Michael Hayn!