Dreamsongs is an excellent collection of George R.R. Martin's short stories. This collection contains several fantastic, fascinating and well written stories. I think that this collection is a great example of Martin's writing skills.
This collection contains such stories as A Song for Lya, Sandkings, The Ice Dragon, The Hedge Knight and Meathouse Man. All these stories are worth reading and so are the other stories.
I highly recommend Dreamsongs to all fantasy and science fiction readers. If you've never read any of George R.R. Martin's novellas, you should buy this collection. When you'll read it, you'll soon find out why readers praise Martin.