is it strongly differs from the studio version of the concert?
The studio version was recorded live. Coming in at about 8 minutes in length, it features 3 different guitar solos and a rare appearance by a then unknown Walter Sansford who later garnered fame in the band Rockland when they had their run of hit singles in the early 80s.
What a lot of Queen fans don't know is that Rockland's hit "Risk" is a re-work of Hangman which was originally written by Brian and produced by John and Robert Parker.