Johann Sebastian Bach : Bist du bei mir (No. 25: Aria)

The song “Bist du bei mir” derives its impact less from melodic development than from the calm stability of the harmonic progression, which lends the text a sense of continuous serenity.
Another characteristic feature is that the vocal line is closely interwoven with the bass line, creating a chamber-music-like impression that reflects the intimate, domestic setting in which the piece was composed.