What is you know im no good chords?

"You Know I'm No Good" by Amy Winehouse is a song in the key of C minor. The chords used in the song are Cm, Gm, A♭, and B♭. It's a soulful song with a jazzy influence, and the chord progression helps to create a melancholy, reflective mood. The song features Amy Winehouse's distinctive, powerful vocals, and the lyrics explore themes of infidelity and self-destruction. Despite the dark subject matter, the song's catchy melody and rich instrumentation make it one of Winehouse's most beloved tracks.