Hi - You ask about 'creating space in between a region that is recorded'.. Do you mean deleting a section of an existing Region, leaving a gap, which you can then record a new performance into? That should be easy -- you'd just isolate a section of a Region, and delete it. Here's how: - Select the Region - Position the playback cursor at the beginning of the section you want to remove - Hit Command-T [Split Regions at Playhead] to cut the Region at that spot - Position the playback cursor at the end of the section you want to remove - Hit Command-T [Split Regions at Playhead] to cut the Region at that spot as well, isolating that section of the original Region - Select the new section, and Delete

Other DAWs have more elegant ways to do that, but if you're concerned about recording over the parts you want to keep in GarageBand I guess it's probably easiest just to record onto another track.. - Remove the Regions you want to replace - Select the Track (header) and duplicate the track (Command-D) -- this will make a new Track identical to the first (same Instrument, same level, same fx, etc) - Record onto the new Track -- if you go over, you can edit the part to fit the timing properly - When the new part(s) are done, you could always copy them back into the original Track

Hmm -- it sounds like you're not playing along with a metronome, and your timing varies significantly with every performance.? Well, GarageBand is not going to make it as easy as it could to address that. In Logic, it would be easy to Option-drag the edge of the new Region to adjust the timing of the notes in that Region, making it easy to slightly speed up or slow down the timing of the entire Region to fit into the gap. But as far as I can determine, GarageBand does not implement that feature. So if you are not recording/playing along with the Session Tempo (the Click), then it sounds like your best bet will be to select all the Regions in all Tracks that follow your replacement recording, and drag them to address any gaps/overlaps. That should be do-able. You may want to turn off the Snap to Grid feature [Edit menu > Snap to Grid] to be able to adjust the timing precisely [by ear].. If some of the Regions that follow the replacement part are longer Regions that are also under the replacement Region, then you may have to cut them all at the point where you need to move them [the end of the new Region], so you can move them at that point without changing the timing in the earlier parts of the song..