Sorry guys, i know i was not clear. I will explain it again.What is a good fingering for playing this:C# D# F# G# A# C# D# F# G# A# G#F# D# C# A# G#F# D# C# A#So when you play only black keys up and down the keyboard.I hope it is clear now.
It's not an easy fingering, but the only one that really works is to use all 5 fingers and repeat the same fingers in each octave. Or do a glissando.