Tonic parallel

In music theory, the tonic parallel is terminology used in German theory derived mainly from Hugo Riemann, Tp, in major, and tP, in minor, is the (US) relative to the tonic and is thus considered to have or fulfill the function of the tonic.

In C major:

• Tp is A-minor, US submediant

In C minor:

• tP is Eb-major, US mediant