Stranger In A Strange Land...

Very few rock and metal bands maintain a single member line-up throughout their history. More often, members come and go. And sometimes, there is an unlikely pairing of an artist's past with his present; for example, Robert Plant touring with (bluegrass country singer and fiddler) Alison Krauss.

There are 20 such pairings listed below. Can you name the band member who was in both groups? Some may be (should be) easy, but I'm guessing there are some you never knew. I will give you one hint: in some cases, the artist was a touring member of the band but did not record an album with the band.

Post your answers in the comments or the chat box. Good luck!

1. Black Oak Arkansas & Ozzy Osbourne
2. Vanilla Fudge & Blue Murder
3. The Cult & The Doors
4. Cream & Masters of Reality
5. Jethro Tull & Yngwie Malmsteen
6. Dust & Ramones
7. Electric Light Orchestra & Black Sabbath
8. Heart & Whitesnake
9. Jefferson Starship & UFO
10. Trapeze & Judas Priest
11. Hawkwind & Motorhead
12. Strawberry Alarm Clock & Lynyrd Skynyrd
13. Billy Squier & Kiss
14. Meatloaf & Ted Nugent
15. Jeff Beck Group & Rainbow
16. Savoy Brown & Michael Schenker Group
17. Billy Idol & Dream Theater
18. Humble Pie & Fastway
19. Manfred Mann's Earth Band & AC/DC
20. Journey & Axel Rudi Pell