A musician was found shot to death in his Brooklyn apartment early today.

Troy Young, 29, was discovered lying on the floor of his basement apartment at 36 4th Street in Carroll Gardens shortly after midnight with a bullet wound to his head, police said.

Officers went to the apartment after a friend reported he hadn’t been seen in several days.

Young had lived in the building for about 18 months, said neighbor Paul Engelbrecht. “I saw him on Tuesday, and everything was good. He was laughing,” he said.

“He’s a very quiet guy. He’d have some people over sometimes on Fridays or Saturdays, one or two, not a lot. He was a no problem guy.”

Young posted video of himself playing drums on his MySpace page, and an associate said he once played with a Long Island band, The Spines.

Investigators found the front door open, but it was not clear if anything was missing from the apartment.