Download the accompaniment song first and import it into iTunes player. Then open garageband and click Empty Project.

Then choose the second one and input the recording with microphone or wire. Then click Create.

Then you will see the working interface of the software. Very concise.

Then click the Import Music button on the upper right to pull the accompaniment to the workspace. Create a new track.

Then, it is suggested to open the trajectory diagram to form and display all hidden ones, which is convenient for management.

And then I started recording my own voice. First, I adjusted two preparatory beats.

Then start recording the first track. You will see the recording button working.

Then click the red recording button at the top to start recording, and then press stop after recording.

There is a record. If you feel good, save the document. Of course, this is not an mp3 file.

To save as an mp3 file, click Enjoy, and then click Export to Disk.

Finally, just choose the file format you want.