Quakers have had an uneasy relationship with music since the late 17th century.
Although singing was recognized as an authentic expression of the connection with Spirit, too much music could become amusement and a diversion. Popular culture played with this dichotomy as demonstrated by this sheet music cover of 1919. Special Collections’ online exhibit ‘Sing ye in the spirit’ : Music & Quakerism in Harmony will show you more on the subject.
Some of the newest notes among Friends are being sung by Jon Watts who blends spirituality, Quaker history and rap. Listen to him and watch to see if your shoulders don’t begin to shake, too!