French retro-futuristic pop duo Air announced Twentyears, a new anthology that collects hits and rarities from the course of their 20-year career, last month. Today, as Pitchfork points out, they’ve shared one of those rarities, “Indian Summer.” Recorded during the sessions for 2009’s Love 2, the obscure track was released only as a bonus track on the Japanese edition of the LP, but now the rest of us have a chance to hear it. Listen below.

Tour dates:
05-20 Parma, Italy @ Labirinto della Masone
05-21 Roma, Italy @ Spring Attitude
06-02 Barcelona, Spain @ Primavera Sound
06-04 Nimes, France @ This is Not a Love Song
06-05 Paris, France @ We Love Green
06-11 Porto, Portugal @ Primavera Sound
06-12 London, England @ Field Day
06-18 Hilvarenbeek, Netherlands @ Best Kept Secret
07-01 Montreux, Switzerland @ Montreux Jazz Festival
07-02 Belfort, France @ Eurorockeeness Festival
07-08 Turku, Finland @ Ruisrock Festival
07-10 Bruges, Belgium @ Cactus Festival
07-15 Salacgriva, Latvia @ Positivus Festival
07-22 Lucerne, Switzerland @ Blue Balls Festival
07-23 Cheshire, England @ Blue Dot Festival
07-24 East Anglia, England @ Secret Garden Party
08-06 San Francisco, CA @ Outside Lands
08-27 Los Angeles, CA @ FYF Fest

The “Best Of” edition of Twentyears is out 6/10. The “Super Deluxe Edition” is out 7/22.