I decided to reverse fade the ending to the song to dash using the "Adjustable Fade" tool and the "Amplify" tool in Audacity. It has a proper (if not slightly sudden) ending, similar to Fingerdash. I'm thinking that maybe because the ingame cut already has a satisfying ending maybe MDK, instead of releasing a full version of Dash, decided to make a remade version and upload that to his youtube channel. I'm aware that other songs used in the main levels might also have a fade out, however at least they have full versions officially created by the artists who made the song. + the only one I can think of is Cycles, which very clearly just has a bridge
Dash was originally made by MDK.