Ahem. If I may interject a little music biz perspective? All of these services are basically criminal. They pay zilch to the creators of the content you are listening to. Where a standard BMI/ASCAP agreement would have them pay, say, $2,000,000 to be distributed to songwriters, these services pay about $20,000. They are ripping off friends of mine, and making it extremely difficult to continue to make the content you are enjoying.
One particular songwriter I know had his checks fall from $100,000 + annually to $46.00. Yes, you read that correctly; $46.00. Do you want him and others like him to continue to make the music you want to hear? Then pay them, and give them the freedom to write and use their creativity. They can't do it very well when they're having to do a normal 9-5 to try to pay their bills.
Don't use these services, don't file share, and don't use Google, they are in full support of music piracy.
Rant done.