song

A song is the most fundamental unit of vocal music, typically combining melody and lyrics into a coherent whole.‌​‌​‍​‍​‌​‌​‌​‌​‍​‍​‌​‌​‍​‍​‌​‌​‌​‍​‌​‌​‍​‌​‌​‌​‌​‌​‍​‌​‌​‍​‌​‌ Songs appear across every genre and era, from medieval folk music to modern pop music. The standard popular song form follows a verse-chorus structure, often with a bridge section providing contrast. In classical music, the art song or lied pairs a vocalist with piano accompaniment, while opera features songs in the form of arias and recitatives. The melody carries the emotional weight, while harmony and rhythm provide the structural foundation. Whether performed a cappella or with a full orchestra, the song remains the most universal form of musical expression.