This Yukihiro Takahashi 7" vinyl record features the tracks "前兆 (Maebure)" and "Another Door", which is exclusive to this single. No, the signed bit isn't actually from Yukki. It's just part of the design. Hear this single for yourself down below!

Maebure: https://www.youtube.com/watch?v=z5cAgDpZHHM

Another Door: https://www.youtube.com/watch?v=CoZAUQh73aQ