The tv show Mannix was made in the late 1960’s, starring Mike Connors, with theme music by Lalo Schriffin (who also wrote the original Mission Impossible theme, and still composes and performs music at age 91). I traced a screenshot, which isn’t as straigthforward as you would hope at that size.

128 by 72 pixel art of title screen of the tv show Mannix, showing 6 frames of the private detective in action