Stick Around For Joy - The Sugarcubes (1992) [img=[url]http://www.amazon.com/Stick-Around-For-Joy/dp/B001AXJ160]samples[/img][/url]
Pergolesi: Stabat Mater - Margaret Marshall, Lucia Valentini Terrani, Etc.; Claudio Abbado: London Symphony Orchestra (1985) samples
Reich: Different Trains, Piano Counterpoint, Triple Quartet - London Steve Reich Ensemble (2011) samples
Big Star, #1 Record and Radio City, 1972 and 1974, respectively. You'd never guess that some of the guys in the band wanted to kill each other.
Hallgrimsson: Cello Concerto / Herma - Truls Mørk; John Storgards: Scottish Chamber Orchestra (2009) samples
I read somewhere that Alex Chilton was a wacko. A lot of lead singers/lead writers are though I guess.