For all you Mac guys that might like to create drum tracks in Garageband but have discovered the the Mac native software does not allow for saving / exporting from GB in a MIDI format (like is needed in BB to create a new song); here is how to do it rather simply and effectively. Keep in mind -This is not a tutorial on how to use GB to make drum tracks - just how to get them out of GB into MIDI and use them in BB.
So - First you create your drum tracks for chorus, fills, transition, intro, outro etc. in GB. Use the GB commands to combine the separate instrument tracks into one track as necessary (see GB help if needed here). Once you have each track created as you like them, you need to save each one separately into the GB loop library (see GB help here if necessary) and can name them appropriately at this point for future use in making your new BB song. Then use the export command from GB to individually save the loops which will be in a (.aiff format) and will go to User/Library/Audio/Apple Loops/User Loops/Single files directory of your Mac. Be sure to turn on the “show library” box in the Mac users directory (for some reason it is a default hidden file on the Mac) so you can access it. Then comes the neat part - a fellow from abroad (Sweden maybe?) has created a cool little script app named GB2MIDI (see attached excerpt from his website with link to get free app) which will change the .aiff file into a .mid file which will then go right into your BB new song - where you put fills, chorus etc in the corresponding BB slot and - shazam! you have a new BB drum song created from GB.
Here is the link to the website for the app and further instructions if needed:
Lars Kobbe • 9 months ago
Hi, I’ve just updated my little app GB2MIDI to the newest Garageband version. It generates a MIDI file from the exported .aif (following the export loop approach) and works with several files at once. Either drag & drop onto the icon, or run the script and select files. The resulting files will be saved in the the folder /User/Library/Audio/Apple Loops/User Loops/SingleFiles/ with the same name but a .mid suffix. In OS X Lion and newer, remember to unhide the user library to see this folder in Finder. You can download the script from
So all you GB / Mac guys - have fun making new BB songs on your Mac - enjoy!