OK, we'll admit that we're not quite clear on exactly what this commercial is trying to sell us on. The search engine Bing? The ABC Family network? Teen Choice Award-winning actress/songwriter Lucy Hale? The new season of her show 'Pretty Little Liars'? Crusty books and coffee?

Regardless, the music you hear in the latest commercial from Microsoft/ABC Family/dusty books is the song 'Can't Stop, Won't Stop,' a driving, synthetic soundtrack and the latest single from up-and-coming indie pop act Harper Blynn.

The song, which debuted in the iTunes Store earlier this week, adds a nice, summery touch to the soft-lensed shots of Hale and her entourage in the recording studio and dandying through an outdoor market. Props to the music supervisor on this one for choosing a song that's as inoffensively light and airy as the commercial itself.

For more music from the choral popsters of Harper Blynn, check out their sophomore album, 'Busy Hands,'  which you can stream on their website.

Hear Harper Blynn's 'Can't Stop, Won't Stop' in the Bing/'Pretty Little Liars'/Lucy Hale Commercial