I've had this list floating around on my desk for the last ten years. I thought I'd put it here so it won't get lost.
These are services that are no more. Many are companies that emerged, raised a lot of money, lost it, and closed.
Connect
Virgin
Yahoo Music (originally MusicMatch)
TotalMusic February, 2009
Ruckus Raised $43 million
Urge (MTV)
CDigx February, 2007
MSN Music
Walmart, September, 2008
Pressplay (Sony and Universal Music) $40 million
Spiral Frog
Passalong (May, 2009)
MusicGiants
Nokia
Microsoft Groove
Rdio, November, 2015 bankruptcy
Zune (Microsoft) is gone, replaced by Xbox Music, and renamed Groove Music.
Qobuz is in receivership (November, 2015)
I don't have all the figures on money that was raised, but I know it's more than $1 billion.
Someone on the inside once said of Sony that they had tried three times and failed.
Most of these companies never earned a profit. Pandora was only profitable a couple of quarters before it went public.