Google Music Search is a service launched by Google recently and currently available only in the US. It is something which is integrated with the main Google search and helps users discover music in a better way. When you search for an artist, album, song or lyrics, Google quickly throws up song previews and other relevant artist/band information in the first few results. For the song previews, Google has partnered with sites like Pandora, MySpace, Lala, Rhapsody and Imeem. Hence it is about giving music lovers a faster access to their favorite songs and albums instead of having them find their way through the search results.
via Google Music Search.
