The hypnotic cut is premiering today on Variance and it marks his first release on London-based label frtyfve. He is actually planning to release plenty more material throughout the coming year.
For the new track, Castro worked with Dermot Kennedy collaborator Jonah Shai, who co-wrote and produced the song, which was inspired by the end of a relationship. He called Shai to confide in him and that "venting session" evolved into a writing session.
“I remember recording the vocal around 5 a.m.,” recalls Castro. “My whole body, my voice, my heart was so exhausted. But the feeling was too certain and too strong to stop. I went to bed to the sunrise, and it made me feel a little better.”
Hear "How Did You Know?" below.