There is a great discussion going on over at Digital Music News about Spotify for individual artists. For those who don’t know,  Spotify is a music streaming service offering streaming of selected music from a range of major and independent record labels, including Sony, EMI, Warner Music Group, and Universal. Digital subscription services have been heralded as the hopeful business model that will save the music industry.  In Rolling Stone’s recent interview with American Idol coach, Interscope Records CEO, and…