Talent, Talent and MORE Talent. People know it when they see it. They can FEEL it and it creates goosebumps on their skin and a tingle in their spine.
I think with movies like "Pitch Perfect' and shows like "The Sing Off" people have found an affinity for vocal-only performances. Strip away the loud instruments, the unnecessary dance moves, and smoke and mirrors, with Mo5aic you just have 4 guys that can flat out sing (1 is a beat boxer, great in his own right).
There isn't much to spill about the show except that these dudes really have the voice of GOD in some of these sings... LOL! The songs they choose are infectious and they put a great deal of energy into all of their numbers. My favorite of the entire show is the jazz segment and they delivered "Take 5" in the smoooooothest way possible. My favorite jazz tune and it was perfect.
They do an interactive segment at one point during the show and the audience is very much engaged.. in my opinion this is mostly due to appreciation of skill and talent on stage. For the 70 minutes I spent there, I do believe they offer more in their vocals than most million dollar production shows on the strip.
It's just raw skills, and you can have any audience in the palm of your hand with raw skills. One of the best shows in town by far.