Album: Tegan and Sara, Hearthrob (Warner)

From henceforth, all commercial-pop snobs should be obliged to listen to the Canadian sisters' seventh album.

Formerly stuck between indie-rock and a decent chart placing, they have now cracked out the synths, ramped up the drum machines, and found their calling in giddy, lovelorn electro-pop hitting the sweet spot between the Yeah Yeah Yeahs and "Call Me Maybe". You will be singing into your hairbrush, even if you long ceased to need one.