When Ronny moves to a small town with his scientific family, he ends up next door to Julia, whose parents live and breathe music. Despite their differences, Ronny and Julia quickly become best friends. But when a conflict flares up between the families, the children are forbidden from seeing each other - something they won't accept without further ado.
Alexander Bergman
Ronny
Katarina Ekholm
Julia
Ruben Melin
Newton
Ola Citron
Igor

Camilla Lundén
Ester

Katarina Lundgren
Bianca

Harald Leander
Ludvig

Mark Levengood
Narrator
Shake It Up75%
Nicky, Ricky, Dicky & Dawn70%
Yo Gabba Gabba!71%
Sofia the First71%
Martha Speaks73%
The Wiggles62%
Hey Arnold!80%
Tyler Perry's The Oval81%
True Jackson, VP79%
The Proud Family76%
Pippi Longstocking73%
Muppet Babies78%
The Really Loud House75%
101 Dalmatians Series66%
Bubble Guppies76%
The 7D62%
Father Knows Best66%
Clifford the Big Red Dog66%
The Adventures of Jimmy Neutron: Boy Genius73%
Handy Manny63%