Modification of addrand method

[hankw...@outlook.com]

Hello Tim, I was wondering if the addrand method could be modified so that if would place the drum(note) hits on the odd numbered steps 75% of the time and on the even numbered steps the other 25%. Maybe a choose method (rand4) with three of the choices for the odd steps and one for the even would work.  I like to snarf in midi scales with longer durations than the usual .kbm note kits.  I think a lot of the key-kit users would enjoy some of the familiar tools within the GO programming language, I myself would.  

Thank you in advance for your help.    Hank