Recent attempt to create a tempo map by dragging audio up to top for Melodyne 4 to create a map produces what seems like half the speed and so won't lock to other instrument properly, anyone know how to get round this.

Thanks

It works sometimes. More often than not, it results in a big mess with 1,000's of tempo changes. It often jumps from 84 BPM to 160 BPM as example. 
I tried over and over and finally gave up. 
 
The closest I got was using a click track I manually entered playing along with the song. I used a kick drum and then froze the track. I dragged that to the timeline, I got a nice tempo map that was only a around 100 changes all very close. 
It matched that track just fine but the other audio tracks were all out of sync now. It seems you have to drag ALL the audio tracks to the time line not just one. And when you do that, you get a big mess of tempos. 
 
In the end it was easier to set the tempo as close as possible and  just play my midi parts as best I could sans quantisizing,  and listen for timing issues. 

Sounds about what I'm getting, havn't thought of trying to tap a click  track, sounds like that would be difficult to get very accurate. lol bUT I'm game for anything if it gives me a chance.
Thanks

Do it with headphones on. Like I said I used a KICK because it cuts through and you can hear when you screw up.
I think there's another way to do this with V Vocal but it's been a long time and I don't have to do this too often. 
 
For me it's taking a live band recording and wishing to add keyboard parts. I suck at keyboards so I need all the help I can get which is quantizing for sure. 
My last attempt was an original song I had recorded with a real drummer. I was trying to make a backing track from the bed tracks. So I tried drum replacer which works real good, but then the midi notes are way off the grid. I was hoping to create the tempo map so things where at least in the ball park. Gave up and had to just re do the song from scratch. It was a lot easier and quicker this way. But I lost some of the cool things the real drummer did. 
 
Lesson learned is you either stay with a live recording "as is"  and not worry about the tempo. Or have the drummer play to a click track. 

There was many reports dragging can do the trick, but I almost never had luck with that.
 
But with standalone Melodyne (I have studio) that works. Here you have good control over the map, when something is not right, that can be adjusted. I strongly recommend check videos/documentation for that process, it was not very intuitive for me. Note there are 2 modes to work with tempo, one is "technical" to set tempo where it is in the audio and another is "creative" to change the audio. I write about the first one.

Thanks aslow3 just been back to Celemony site and watched the ARA vid for Sonar and changed a couple of things i was doing now I've got a system that works well for a few songs, so hopefully I'm sorted now.
Also followed the one for Studio One which I now also use and that works properly too.

Before you drag a tempo reference track to the timeline, for Melodyne to use, make sure each track starts at the very beginning of the project. Drag the beginning of each track's first clip to the very start.

Thanks serious fun.