The product details for this release contain no details of the source of the material.Disc 1 is from Budapest 1991 with Joe Lynn Turner. The gig was officially filmed -and much bootlegged as a DVD- and this is the soundboard recording which is not common as a bootleg. Tracks that were not shown on the TV broadcast are absent so you don't get Burn, Cut Runs Deep and rather sadly the rarely played Wicked Ways. Sound is ok on the disc. The JLT era is not my cup of tea but this is one of the better soundboard recordings from this era.Disc 2 and the first 5 tracks on disc 3, are taken from Buenos Aires, Argentine, 03/03/1997. This gig was also officially filmed and this is the soundtrack. It appeared as a bootleg called Obras 97 which also included acoustic tracks from a South African radio show in 1995. Curiously the South African tracks are here also - tracks 6-10 on disc 3. Sound is also pretty good here. The Argentinian gig was when the band were still supporting the Purpendicular album and the band is in good order here with 5 tracks from that album.