Badfinger did a song called "Day After Day" on their 1972 album 'Straight Up.'
The Beatles
Howie Day.
A Day in Black and White
will.i.am - "It's A New Day"
Donavon Frankenreiter. The song is "Lovely Day."
The Band called ATB sings its a fine day
Kid Cudie sings day n nite.
Jesse McCartney sings best day or her life.
Green Day sings the song homecoming.
Green Day sings a song called warning
Third Day
Matisyahu
Green Day
The song Mitchel Musso sings for Earth day is called The Three R's.
Lady Gaga :L
Green Day
kid cudi :S He sings aswell.