GarageBand Rename regions in the Tracks area
When you record a region, GarageBand gives it the same name as the patch for the track it is recorded on. You can rename regions to make it easier to remember what music each region contains, or where it fits in the project.
Rename a region
Control-click the region, then choose Rename Regions from the shortcut menu.
Type a new name for the region, then press Return.