Audacity Forum

I've been working on a project with a few of my friends, and asked them to record a voice sample for me.

Now, the speech is meant to fit into the same tempo as a song I have recorded, but they are slightly off.

Is there any way I can alter the speed of one track whilst keeping my other tracks at the same speed?

Select the track that you want to change, then either:
Effect menu > Change Speed
or
Effect menu > Change Tempo.

The "Change Speed" effect gives the best sound quality, but the pitch will also change along with the speed.
The "Change Speed" effect will maintain the original pitch, but the sound quality may be less good.