Penin and Tonic

Penin and Tonic are terms used in music theory related to scales and modes. "Penin" isn't widely recognized; it might be a typo or specific to a niche context. "Tonic," however, is a fundamental concept: it refers to the root note of a scale, the note where a piece of music often feels centered or resolved. In a C major scale, C is the tonic. The tonic serves as the anchor point around which other notes and chords are built, giving music its sense of stability and rest.