At 8 p.m. on a Saturday night in Holyoke, a crowd anxiously awaited the performance of (Sandy) Alex G. Alexander Giannascoli, known by fans as (Sandy) Alex G, performed at Gateway City Arts in Holyoke, Massachusetts on Nov. 16 as part of his tour for his new album, “House of Sugar.” Accompanying (Sandy) Alex G on this leg of his tour were the bands Tomberlin and Indigo De Souza.