The Glee cast became a cultural phenomenon by bringing Broadway sensibility to contemporary pop and rock repertoire. Their recordings demonstrated that young singers could command complex arrangements while maintaining the energy and attitude of modern music, reshaping how high school and college choirs approached non-classical material.
Their influence on choral music education has been substantial. Directors have looked to Glee arrangements as a bridge between what students hear on the radio and what they perform in concert, making popular music a legitimate and engaging part of the choral curriculum.