MUMBAI: SpiralFrog, an ad-supported music service has signed a licensing agreement to offer compositions from Sony/ATV Music Publishing LLC via its Web site.

The company says the agreement is key to expanding its collection of legal music downloads, as music publishers like Sony Corp affiliate Sony/ATV ensure that songwriters and composers are compensated.

SpiralFrog offers free song downloads as long as users agree to watch advertisements while the music is loaded. The company now operates in the United States and Canada, with more than 800,000 songs downloads on offer.