I just saw this advertised on Amazon due for release 8th April 2016. Its obviously not official and has a crappy title, but it might be a good CD to have.
I thought i'd post in case anyone is interested.
Track list:
1. Like A Virgin 03:39
2. Holiday 06:08
3. Into The Groove 05:16
4. Love Makes The World Go Round 06:23
5. Causing A Commotion 05:46
6. Express Yourself 06:03
7. Sooner Or Later 05:33
8. Fever 05:21
9. Bad Girl 06:05
10. Fever 05:12
11. The Lady Is A Tramp (with Anthony Kiedis) 03:10
12. Bye Bye Baby 04:13
13. Take A Bow (with Babyface) 04:44
14. Lucky Star 04:35
15. La Isla Bonita 05:50
http://www.amazon.co.uk/Bits-N-Bobs-Madonna/dp/B01CF03OFA