In addition to being used as a tag for his entrance on CBS episodes he hosted , Steve Allen 's composition `` This Could Be the Start of Something '' was used as the opening theme in 1972 . In addition to being used as a tag for his entrance on CBS episodes he hosted , Steve Allen 's composition `` This Could Be the Start of Something '' was used as the opening theme in 1972 arranged by Edd Kalehoff for Score Productions .