This is part of a fairly easy series of 8 puzzles caches and a bonus celebrating the music of the 70s. Most are cache and dash.
These lyrics come from which song:
"Don't look Ethel!"?
The year it was in the charts for the first time call A B C D
How many weeks it stayed at number 1 call E.
N 51 22.(A+E)(C-A) (E+A) W 002 52.(D+E)A(C-D)