One of the highlights of Carly Rae Jepsen's E•MO•TION album—which recently finished at No. 3 in the Pazz & Jop Year End's Critics Poll—was "Warm Blood," which was co-written and produced by Rostam Batmanglij. Batmanglij unveiled a new solo effort today in the form of "EOS." In a statement, he described how the song came together.
"I had this one idea from a while back stored as a voice memo on my phone," he wrote. "It was the chorus of 'EOS' and it had come out of me all at once: melody, lyrics and chords. It's rare that that happens for me—I'm always collecting ideas on my phone but usually it's individual building blocks of a song, this was the essential elements all coming out together. The rest of the song started to take shape because what I recorded kept reminding of a very specific place and time in my life. I wanted to capture that feeling, and finishing the song became about chasing it down."