From the official announcment:
The Ozzy Osbourne 8-Pack will include classics from the recently re-released Blizzard of Ozz and Diary of A Madman, including “Mr. Crowley”, “Diary of a Madman” and “Over the Mountain”. Fans who purchase the pack will also be able to play “Bark at the Moon” and “Mama, I’m Coming Home”, both of which are only available as part of the pack, and both of which include built-in Pro Guitar/Bass upgrades at no additional cost.
Available on Xbox 360, Wii and PlayStation®3 system (May 31):
• “Bark at the Moon” X (available only as part of the 8-pack)
• “Diary of a Madman”
• “Flying High Again”
• “I Don’t Know”
• “Mama, I’m Coming Home” X (available only as part of the 8-pack)
• “Mr. Crowley” X
• “Over the Mountain”
• “Steal Away (The Night)”
What I’m not sure I’m happy about is that “Bark at the Moon” and “Mama, I’m Coming Home” are only available if you buy all the songs. I’m not a big Ozzy fan, but “Bark at the Moon” is a pretty good song and I would probably just purchased that one. I know many Ozzy fans are excited about “Mr. Crowley”. As always songs that are available to be purchased separately are $1.99 respectively. And some of the songs are available for pro guitar and bass mode. As always you need to pay an extra dollar for per track for that privilege.