As of StepMania 5.0.7, each chart can be assigned a unique music file, thus allowing one file to contain two or more music files, given that they're the same length.

This file is exactly that. The Challenge chart uses another music filenamed "cha.ogg".

If you have SM 5.0.7 or later, you may play the Challenge chart directly from the main folder ([Scrabble] - Renai Circulation). BTW, SM won't allow you to play Challenge and one other chart at the same time.

If not, there is a separate folder named "cha" containing the .sm and .ssc files of Challenge only. Please move "cha.ogg" to that folder before playing. The rest of the charts (Beginner to Expert) are still playable from the main folder.

I hope you enjoy this file! (PS: Pandy said it's ok.)

--vincentw