Could It Be Any Harder was created in 2002-09.
The Harder They Come was created in 1972.
Harder Stadium was created in 1966.
Harder to Breathe was created in 2002-07.
Dream Harder was created in 1993-05.
Harder ... Faster was created in 1979-10.
The Harder They Fall was created on 1956-05-09.
Harder Than the Best was created in 1979.
Faster Crashes Harder was created in 2001.
The Harder I Try was created on 1988-07-30.
Harder na Rass was created in 1979.
Why you'd want to I don't know; it won't get any harder than it is.
Shake Harder Boy was created on 2002-11-26.