Cinnamon Entertainment has appointed UK-based The Parthenon Group and The Sharpe Company in the US as licensing agents for Freefonix.
The 40 x half-hour toon series targets seven- to 15-year-olds with each ep ending in a musical battle to reach the mystical 13th note.
BBC1 aired the series earlier this year and it will return to the net before the end of 2008.