The story is:
“The project was brought about by a German businessman named Leo Muller, who contacted Irish group Thin Lizzy to record the album. The group were not enthusiastic, as they were trying to forge their own style and identity, but they needed the money. Thin Lizzy's vocalist, Phil Lynott, decided that he was unable to sing like Deep Purple vocalist Ian Gillan, so restricted himself to playing bass guitar and singing back-up. The band brought in Benny White, singer with the Dublin group Elmer Fudd, because they generally performed Deep Purple covers during gigs.
The makeshift band rehearsed for "two or three hours", according to Downey, before recording the whole album in one day. Nine tracks were recorded, with five being Deep Purple covers. Three others were loosely improvised instrumentals; "Dan" - a version of "Londonderry Air" or "Danny Boy" by Bell in a Jimi Hendrix style; "Rising Sun" - a cover of "The House of the Rising Sun" made popular by The Animals; and the original composition "Palamatoon". The last track on the album was "Corina", credited to Leo Muller, as were the other non-Deep Purple songs.”