I loved all of his work from Husker Du to solo to Nova Mob. He wrote some really great songs. A sad day.
You could definitely tell a Grant song from a Bob song. Sometimes all I could stand were Grant's. Saw him a couple of times. 1 was OK the other was great - he played electric guitar on his own and played stuff from all through his career. Sad news.
Agreed, I've always liked Hart's songs just a little bit more than Mould's, something about his voice probably. Tragic.