Kristen Bell will produce an animated musical series, Do, Re & Mi , for Gaumont Animation. Bell will take pre-school aged kids on a ?musical adventure,? with original tracks performed by the Frozen star and American Idol finalist Jackie Tohn. The series will follow Mi, the musical note, who searches for a song each day with pals Do, an electronic tablet, and Re, a bossy keyboard. It is the Bad Moms star's first foray into animation production, though she has voiced both the beloved Princess Anna in Disney?s Frozen and sloth Priscilla in Zootopia .