BAE173's Hangyul is the voice behind "Melody" for the 'Love in Black Hole' OST.

In the music video, Taeyang (played by Hangyul) crosses paths with his childhood friend Eunha (Cosmic Girls' Seola). "Melody" is a retro pop ballad about longing for someone you like and the nostalgia of the time you spent with them.

Listen to Hangyul's "Melody" above! Have you been watching 'Love in Black Hole'?