The next generation of serious young singers is preparing for a career at an earlier age and with more intensity than past generations. This group of talented teenagers requires special multifaceted instruction during their vocally formative high school years, one important element of which is a carefully selected repertoire. The challenging aspect is selecting age-appropriate arias that are also competitive enough for competitions and top tier university auditions. This repertoire should demonstrate the singer’s particular strengths, and at the same time be technically appropriate as well as textually and dramatically relatable. This 2016 Journal of Singing article, “Serious about Singing-Age Appropriate Repertoire” presents 10 arias in each of the categories: sopranos, mezzos, tenors, baritones, and basses for consideration.