A performer in a track is the individual or group primarily responsible for the artistic execution of the music.
Instrumentalist: an artist who plays one or more instruments, contributing to the melodic, harmonic, or rhythmic elements of a track. This includes roles such as, Bass Guitar, Acoustic Guitar, Electric Bass Guitar, Drums, Guitar, Keyboards, Piano, Violin, Rap, Musician, and Synthesizer
Remixer: an artist who reinterprets an existing track by altering its structure, adding new elements, or creating a new arrangement.
Sampled Artist: an artist whose previously recorded performance is incorporated into a new track as a sample.
Vocals: A singer who contributes lyrics, melodies, or harmonies through singing or other vocal techniques.
These roles will display as "Performed by" on Spotify.