The "annoying" background music played during Number Please -- which GSN ran a couple episodes of last week -- might have paved the way for the live music played throughout Mister Rogers' Neighborhood and Let's Make A Deal during their runs.
But I guess future composers for video games might've looked at the kinescopes as well to hone their crafts later on in their lives. Like I've said when we were at ATGS, the music cues in the Mega Man games were all similar to those on TPIR, but I'll save that for Golden-Road.net.
It's just that the vibraphone was the only instrument used on Number Please, while LMAD and Mister Rogers all used live orchestras while their shows are taping. As for video game music, it takes lots of time.