An intro is a unique section that comes at the beginning of the piece.
This lesson explains the verse as a part of a basic song structure. A verse is a part of the verse-chorus composition present in popular music and it contrasts the chorus in melody, dynamics and harmony usually.
This lesson explains the chorus as a part of a basic song structure. Chorus is usually the most potent and memorable part of a musical composition.
A bridge is a section that contrasts with the verse, ends on the dominant, and culminates in a strong re-transitional. This lesson explains the bridge as a part of a basic song structure. A bridge is an element in musical compositions that introduces variety and sometimes a transition from verse to chorus.
This lesson explains the outro as a part of a basic song structure. The outro is a part of the composition that eases the listener out of a musical composition. It is effectively a transition towards the end of a song.