Looking for the Similar Tune for "I Saw You at the Funeral"

The tune/chords from I Saw You at the Funeral” has been haunting me, and worrying me that I might have taken some existing TV theme, so I searched on iTunes for TV Themes, and I think it is the theme from Hill Street Blues that I’m remembering. Luckily it is quite different, although has a very similar feel. So I’m going to stop worrying now.

I think I’m close to finishing the basic chords and melody, and just need to finalize the lyrics now.