Grumpy, the indie rock project of New Yorks Heaven Schmitt, will release their new EP Piebald next month. Grumpy is technically Schmitts solo project, but they like collaborating with other artists too: Earlier this year they teamed up with claire rousay and Pink Must for the one-off single called Harmony. Thats a perfect segue into todays news, which is that former Girlpool member Harmony is a featured guest on Grumpys latest single Bird Parts.