The lyrics for "Mary, Did You Know?" were written by Christian singer and comedian Mark Lowry, after his pastor asked him to write a Christmas musical for their church. Southern gospel musician Buddy Greene later added music to his words.
The Isley Brother's song, "Contagious," peaked at #19 on the Billboard Hot 100. This meant that the band of brothers became the first group to score a Top 50 hit in six consecutive decades on the chart.