EJazzNews sends out an email with a free sampler of jazz every week. Full tracks, zip file of mp3s, no DRM. Good stuff, too, by my unadventurous lights. This week's, EJN 13, featured several torchy female jazz singers and a scatting male singer that were talented and new to me. Better than Pandora, which has gotten a bit predictable. Other samplers featured other styles; not every week will be a hit with all audiences. So delete the tracks you don't like, guilt free.