'Rock The House' blends right into D.M.C.'s powerful acapella intro for 'King of Rock' which picks up where 'Rock Box' left off. At a time before most rap albums contained skits or interludes, this was pretty groundbreaking. The album's opener 'Rock The House' is essentially an instrumental version of the title track 'King of Rock' with vocal snippets and reverb effects thrown in.
Where 'Rock Box' was the only song to blend genres on Run-D.M.C.'s nearly drum-machine-only debut album, King of Rock explored many.