From tour to tour, except for those moments when the new album and the band went on tour in support of the album track list of songs performed rarely changes.
This is critical for you?
Listening to bootleg a concert at which you pay more attention to the technical characteristics of the concert, or for you to have value simply play a concert, or do you pay attention to the jitteriness, the power of voice Freddie
I take a breath... tip the concert slightly under my nose.
... take a whiff and sip until it's done.
That's my method for listening to Queen concert bootlegs.