DCF (David Charles Fischer) is a songwriter who splits his time between Toronto and Los Angeles. His recent releases span a wide variety of artists such as Travis Barker, Cheat Codes, Wiz Khalifa, LU KALA, NOTD, Leah Kate, chloe moriondo and Verzache to name a few. As one of bülow's main writing collaborators, DCF has contributed to several of her biggest songs, including "Sweet Littles Lies." Other notable co-writes include "Girlfriend" by Rebecca Black, as well as "fuck, i luv my friends," "afterthoughts," and "wannabe" by renforshort. Other recent collaborators include Jon Levine, Stint, David Pramik, Captain Cuts, Curtis Waters, Lowell, lilyisthatyou and Mike Wise.