Maestro Jump In Music Freezes

Heeey i just downloaded 'Meastro Jump In Music' .
But when i want to play the first song in the last level ( the Cowboy level) i get a black screen with no sound but still the backlight o.OEDIT: i can play it till the "chickenito" tutorial. But after i click on play the real song (fame), my screen gets black.Who knows how to fix it?
Or do you have the same problem?

Are you using a flashcart or an emulator. And what brand, version, etc.

i'm using a R4 (the original/official/real one) and with the newest (on)-official firmware.

If it is real R4 originaltry both kernal v1.18 and Ysmenuhttps://www.romulation.org/forum/index.php?topic=27617.msg466427#msg466427You boot ysmenu.nds like a game for use of ysmenu and your game after