Yaerang Practice Space (예랑 연습실) - Hyochang Park Station (효창공원앞역, line 6)

A reader had asked me to find "a piano practice room somewhere near Itaewon."

Yaerang is a quick 4-5 block walk from Hyochang Park Station (효창공원앞역), exit 2. As you're walking up the street, you'll see a building on your right-hand side with a 7-Eleven on the 1st floor. Yaerang is on the 3rd floor of that building.

You can call them at 02-3272-7130.