What makes a band great ? The following traits come immediately to mind:: A great song, very talented musicians or singers, great stage presence, etc, etc. Probably one of the key characteristics that has set a lot of bands apart from the flock was their vocal harmonies
The following acts not only sounded good in the studio, but they could produce the same sound live. These are not in any particular order, but all of them have set the bench mark for “substantially” perfect harmonies.
Beach Boys
https://www.youtube.com/watch?v=7puDgLMaoEM
Crosby, Stills, and Nash
https://www.youtube.com/watch?v=2vnYKRacKQc
The Eagles
Alabama
The Temptations
https://www.youtube.com/watch?v=yve3xB219VQ
Oak Ridge Boys
Westlife
All For One