Being able to adjust the speed of a song can be super handy for learning how to play a part – especially when you can SLOW DOWN the track.
A fast song with many notes is pretty daunting at performance tempo. Here’s a free way to slow things down for study using Audacity.
(Instructions written in 2010. A newer version of Audacity might need a different slow down procedure.)
First step is the Download Audacity if you don’t already have it. It’s free and works on Windows, Mac, and Linux.
Open the program and start a new project.
In Audacity, click Project>Import Audio, then find a .wav file and open it. (If you came from itunes, it’s usually located in the same album folder as the normal MP3) The track now appears in Audacity.
Select (click and drag) the area you’d like to slow down. You can also go Edit>Select All if you want to select the entire track.
Click Effect>Change Tempo. Then drag the slider to the left however much you want to slow the track down (you can also speed it up by dragging right) and click “OK”. Keep in mind that the slower you go the more the effect seems to bog down the computer while it is generating.
If you’d like you can export the file back to MP3 by going “File>Export As MP3”.
You can also transpose a song using Garageband