Getting GB to play back drums properly

Question

New to GarageBand and only had ipad2 for a couple weeks.  I went to record a demo and started with the drums.  Got everything set up, hit record, and began to lay down the track using the touch screen.  Using just the base and snare I've got a VERY basic blues shuffle beat. As I'm laying it down it sounds perfect.
But when I go to play it back, I don't hear the shuffle beat, but a funky syncopated beat.  I mean for all sixteen measures I recorded what I got back was totally different than what I layer down.  Tried slowing down the tempo by half, and that didnt help either.  This is my first Track on my first recording, so needless to say I'm a bit frustrated.  Can someone tell me why it is doing this?  I played with the settings, trying different time signatures, with no improvement.  I've seen the strings on here regarding latency problems, but this is way beyond that.  What am I doing wrong?
Also, I don't see a way that I can go into the track and manipulate it other than cutting, pasting, etc. to try to fix it that way. 
Thanks in advance for any help!
Chris

Answer 1

I'm having the same problem with the timing of my drum track being altered, and it's driving me nuts.  I have had luck editing the timing, though it is a painstakingly labor-intensive process.  Follow the instructions below, but beware!  Once you edit a drum track do not change the song's tempo or you may lose all your hard work.  I lost hours of editing because of something - either by changing the tempo or by accidentally turning off and on "snap to grid," which I discuss in a bit.
I find it easier to edit when I "stretch out" my track by doing a pinch-zoom in the Tracks view mode.  This makes the bars wider and easier to manipulate.  It also gives finer granularity between beats.  Be careful though, if you stretch out to maximum, it turns off snap to grid.  I haven't been able to figure out if having "snap to grid" on or off actually makes any difference at all, so I'll just say be careful, and maybe experiment with the snap to grid functionality.  Let me know if you figure anything out about it!
To edit the timing of your recorded drumming:
- go to "Tracks" view by tapping on the icon that looks like a little brick wall
- select your drum track by tapping on the recorded section
- tap again to bring up a menu
- tap Edit
- find a drum hit you want to change by playing the song back to find an offending section, or by tapping around on the green bars.  Once you identify a hit that has the wrong timing:
- you can move the green bar slightly left or right to get it to play earlier or later, respectively
Since it sounds like you have a repeating beat, I would copy a measure and replace any identical measures to save yourself some time.  To copy a region of notes, in Edit mode:
- tap-and-hold the screen, not on a note, but to the right of the the last note in the region you want to copy, making sure your finger is also above the highest note (drum) in the region
- drag your finger to below the bottom-most note and left of the first note
- lift your finger and a region will be highlighted - the notes will be a darker green
- tap on any of the notes to bring up a menu
- tap Copy
- to paste this, move the white vertical bar thingy with a pentagon at the top to the beginning of the portion of the song you want your region pasted into
- tap the screen until the highlighted notes you just copied are no longer dark green
- delete all the notes you want to replace (one way to do this is: tap on note to bring up menu, tap Delete)
- tap the screen anywhere (not on a note) until a menu pops up
- tap Paste, and your region will be pasted at the vertical bar thingy