Possessing a five-part harmonic sound, The 5th Dimension is recognized as one of the most prolific soul, R&B groups in musical history. The elegant pop crooners churned out 22 Top 40 hits and five No. 1 songs, including "Up, Up and Away," "Wedding Bell Blues," "One Less Bell to Answer," "(Last Night) I Didn't Get to Sleep At All," and the iconic "Aquarius / Let the Sunshine In". The 5th Dimension's Greatest Hits On Earth features 11 of their most beloved songs including all of the aforementioned classics and more!