Since February, Band of Horses have been in the studio recording their fourth album. The Seattle quintet have been working with legendary producer Glyn Johns on the follow-up to their 2010 breakthrough album, 'Infinite Arms,' which reached No. 7 on the Billboard 200.

However, they took a break from the confines of the studio to play their first-ever dates in South America, with stops at festivals in Santiago, Chile; Buenos Aires, Argentina and Sao Paulo, Brazil. During their gig at Lollapalooza Brazil, they gave an acoustic performance of one of their new songs, 'Long Vows.'

Naturally, a fan whipped out their camera and captured it all, proving that there's virtually no place remote enough a band can go to try out its new material without it winding up on the Internet. And we thank our music-loving stars every day for that.

So take a listen to 'Long Vows.' This was a (mostly) acoustic show - drummer Creighton Barrett doesn't even have a full kit - so the recorded version probably won't sound like this. Still, It's got all the trademark melancholy folk-rock touches that we expect from them.

As of now, Band of Horses do not have any plans to tour, nor do we have any other information on the new album. However, they will make an appearance at the DeLuna Festival in Pensacola, Fla. in September, so maybe we can expect it to be out by then.

Watch the Video for 'Long Vows' by Band of Horses