Key data:

 1975

 Hertford, Hertfordshire 

 8 “A-list” albums (1975 to 1995)

 disbanded 1997

The Jukebox Pick (of 25):

 All Night Long

 (Ritchie Blackmore, Roger Glover)

 Rainbow

  “Great” Rock

 First out on their album “Down to Earth” in July, 1979.