Pandora

If you have broadband, you can create internet music channels for yourself via Pandora. You select one artist. You're then presented with a series of related music. You can pick and choose to refine the channel.

So far, I've created channels for Jane Siberry, Kate Bush, Cocteau Twins, and Airto Moreira with Flora Purim. The last has been hardest to tune. Pandora doesn't seem to distinguish well between electric Latin jazz, and anything sung in Portuguese.