When we listen to music albums, it appears that all the music and singing was done at the same time by all the performers. But in reality, the musicians play the music separately and then on some other day the singers sing. All these different sounds are recorded on different tracks and then mixed together to make the song. This putting together of a number of tracks to produce music is called mixing.
If you also want to learn all these professional techniques for recording music, then you have to begin learning using a multi-track recording software such as Orinj. It is an audio recording software designed to be cross-platform. It works very well on Linux, macOS and Windows.
Orinj is designed using Oracle Java and as such you have to install JRE (Java Runtime Environment) on your computer before you can start using it. You can download JRE for free from https://java.com/en/download/. After installing JRE, you can simply double-click on orinj.jar in order to launch Orinj.
Orinj has a user interface that displays 3 tracks already. We can add more tracks if needed. It is better to keep different types of sounds in their own separate tracks. If you want to include them later on, then you can mix them together.
Orinj can record sound coming from your microphone or from input devices. It can also record sound from anything being played on your PC. For that, you have to first set Stereo Mix as the input source for recording in Windows settings. Then you can relaunch Orinj and select the input source in Orinj too.
Orinj can save files in the WAV file format. Before you can save all the tracks to a single file, you have to mix them together. Orinj offers a different user interface for mixing all the tracks where you can change the volume and add all sorts of effects.
You can download Orinj from https://www.recordingblogs.com/orinj.