you seriously need to re evaluate who did what songs...

Survivor did eye of the tiger

jimi was a major part of both groups he was in (band of gypsies and the jimi hendrix experience) but both the groups were very differnt from each other

Band of Gypsies(Jimi Hendrix) - Foxy Lady
The Jimi Hendrix Experience(Jimi Hendrix) - Purple Haze

again the same thing with eric clapton

Derek and the Dominos (Eric Clapton) - Layla

and thinking about clapton--

cream- sunshine of your love