I've listened to this album so many times, it's now part of my dna.
It was recorded in 1976 or 77. The band is called UFO, they're from The UK, had many lineup changes, but the one constant member has been the lead singer, Phil Mogg.
The lead guitarist on this album and a few prior and a couple since, is a bloke called Michael Schenker, a highly regarded, but deeply flawed, German guitarist who was once in The Scorpions with his brother.
Some people regard this album as one of the best live rock albums ever, the rest haven't heard it yet.
It's called Strangers in the Night, songs to listen to include, Mother Mary, Rock Bottom, Too Hot to Handle, Doctor Doctor (Iron Maiden do a very good cover) and Love to Love, among others.
Anyone who likes rock from that era would be hard to please if they don't like this.