It’s the third Homegrown for these talented-beyond-their-years teen rockers (who’ll fit in a festival performance around studying for the SATs). Co-founder and guitarist Jack Campbell has been writing songs inspired by girls and cartoons since fifth grade. He formed Excuse Me, Princess with bassist Sam Wattrus in 2009 after the demise of a punk band they were in together, and they added violinist Greta Konkler shortly after. Drummer Ben Oullette came along later, and after Konkler’s move to college, the group brought in Kallie Gunsolus on synth. The band’s infectious indie pop-rock tunes caught the ears of Minneapolis’ SO-TP records, which released the band’s second album, Stop the Flow, in 2011.