Warner Bros

Though these sisters got their start opening for Neil Young, Tegan and Sara don’t have much in common with their fellow Canadians. With six albums in the last 13 years, the duo documented their neuroses and heartbreaks over indie beats, but their creative stamina eventually stalled. In need of a change, Tegan and Sara wrote the songs together but brought in three producers to amp up the energy. Heartthrob is chock-full of heavily produced, dance club-worthy tracks, obviously influenced by Robyn and Madonna, with synth-y keyboard melodies and vocals that are a flashback to the female pop of the 1980s. They still create the smart, witty, thoughtful music they made when they began, but with a bit of a mainstream makeover.