It's remarkable to note that, since 1970, Uriah Heep has released nearly 100 albums including studio recordings, live recordings, and various international compilations. 

To the best of my reckoning the song "Lonely Nights" has appeared on eleven of these releases:

Head First (1983)
Power To The Rockers (1988) / USA
Their Hits (1994) / Germany
Lady In Black (1994) / Germany
The Best Of - Rock History (1995) / Greece
Easy Livin' (1996) / Germany
Easy Livin' (2000) / USA
Blood On Stone - Anthology Vol 2 (2001) / UK
Rock Champions (2001) / Holland
Classic Collection (2002) / USA
The Best Of (2002) / UK