At 54 Below, on Monday evening, Moipei, in their show “Moipei: Sing, Sing, Sing,” were superb, superb, superb! More than blessed with beautiful voices, the identical triplet sisters, Mary, Maggy, and Marta, have impeccable comedic timing, and their many individual talents shined through in their 18-set show. The sisters are reminiscent of a group of famous sisters from years past, The Andrews Sisters, and evoke a similar quality in terms of execution and style – they are almost straight out of the same era despite it being nearly a century later. This is partly due to the songs they sing but more so due to the wholesome quality that the Moipei triplets evoke in their coordinated dresses, styling, and choreography.