Using Adobe Audition, you can mix a recording with a song, and have background music while playing the recording.
1. Use a high-quality microphone and a microphone with good sound pickup effect
2. The recording environment must be absolutely quiet
3. Plug in the headphones and microphone, and debug Good volume
4. Right-click the small speaker on the taskbar and set the system sound parameters
5. Open Adobe Audition
6. Edit---Preferences ---Set the device in use
7. File---New---Multi-track session--Set save path---OK
8. Right-click the first Track---Insert---File---Insert the required accompaniment
9. Light the R key of the second track "Recording preparation"
10. Click on the playback control bar Start recording by clicking the record button