UNTUNG138 Soto split vocal duties with Russell Allen on the album. In 2021, he released an album titled "The Duets Collection - Volume 1" in which he re-recorded songs throughout his vast career as vocal duets with the likes of Eric Martin, Dino Jelusick, Russell Allen, Johnny Gioeli, Nathan James, Erik Martensson, and others on the Frontiers label. In 2015, Soto recorded vocals for Joel Hoekstra's 13, contributing to the album Dying to Live. This support slot would serve as the chance for Winery Dogs drummer Mike Portnoy to 'scout' Soto for the venture that would become Sons of Apollo.|Management had Expected Just the Reverse