Out of the Blue (sometimes abbreviated as OOTB, pronounced OOT-Buh) is a co-ed a cappella group from Yale University. Out of the Blue's repertoire includes music that spans 50 years and several genres, including pop, folk, and R&B. The group has won multiple a cappella competitions, awards, and accolades, shared the stage with Ben Folds and Sister Hazel, and performed for audiences all over the world. Out of the Blue records a full-length studio album every two years. The group's fifteenth studio album, Hide & Seek, was released in September, 2017. Their sixteenth studio album was recorded in January 2019 and is set to be released later in the year.