Dr. Yesterday's Old Time News (partially found TV show; 1981)
Dr. Yesterday's Old Time News was a show made by Skylark Productions and released in 1981. The show is about a "time lord" and a group of reporters who use their time machine to "interview" famous figures from the past such as Mozart. At least ten episodes of the show were produced.
The show is very obscure. In fact, based on the "As Seen on TV" logo on cover art usually reserved for products one could order by phone, it may have only been available through ordering it via calling in and requesting episodes. At any rate, while little footage of the show exists online, there are entries for it on Amazon.