Katharine McPhee from Scorpion
Before this beauty joined the team of geniuses on Scorpion, Katharine McPhee was already an acclaimed singer. After earning a name for herself while enrolled in a popular singing competition show, she released her self-titled album in 2007 and it landed at No. 2 on the Billboard 200 chart.
In 2014, she recorded a duet called "Just Us" with Scorpion costar (and human calculator) Ari Stidham. Then, in September 2015, she released her fourth album, Hysteria. Most recently, Paige, her character on the action drama series, showed Walter (Elyes Gabel) a thing or two by singing "Don't Go Breaking My Heart" in the episode entitled "Sun Of A Gun" (Episode 14, Season 2).
Watch Scorpion on CBS.