Stems are one Group of audio tracks in the Music production or in the mix, also called group tracks or subgroups. This outline is currently in the mastering process for the so-called Stem mastering advantageous and creates the possibility of more control over your music and mix. This enables an increase in the sound quality of the track and thus also improves your music production. be here Instrument tracks or Vocal tracks or Effect tracks to one Group merged  and exported separately. These are called stems. Vocal Stems, Backup Stems, Guitar Stems, Drum Stems, and Synthi Stems are useful. Also at Online mixing or Recording stems are beneficial. These facilitate the processing and grouping of instruments which are processed together.