I dont have the article with me, but in the lastest issue of Total Guitar there is a small snippet where Steve Vai talks about Prince. He first mentions about jamming with some members of NPG (Michael B. and a bass player) while recording at PPark. Then goes on about meeting up with Prince and how friendly he was. He ends by mentioning how he was amazed to find a recording at Paisley Park where Prince was playing Tender Surrender (a Vai ballad). The title of the caption goes like 'Prince was playing my fucking song!'. If someone has the article could they please post it up?