If you're thinking this is going to be like a Legends performance with Sinatra, Davis, Jr., and Martin, it is not. Sinatra was the best of the group. Davis, Jr. danced better than he sang, and Martin sounded good, but his repetitive mannerisms and prancing about on stage became tiresome. The performers were at their best when they interacted together, which was the last 15 minutes of the performance, and if the whole performance could have been that good, I would recommend the show.
About two-thirds of the way through, a woman came out and did a number, and while she sounded great, it was very random. They also started the show as if these guys were coming down from heaven for one last performance, but that story line never really got tied up at the end. Also, they announce the time period (1960s) as if they are back in that era, but do jokes about present-day people, products, etc. There was at least one song where they sneaked a recording in that wouldn't have been noticeable if not for the bad fake piano playing of the pianist.