Also notice how the Diggin it set (10:10 on the second video) looks very much like the original SM:TV set, I always wondered if they'd dug the old SM:TV set out of storage and given it a lick of paint, they were so similar.
The Diggin' It set was a redressed Studio Disney set, but SM:TV could have been the inspiration for that.
From videos on YouTube, later episodes did not even include the 'Wake up Saturday' parts. That seems to have been removed, before the CD:UK-like theme was dropped entirely for the familiar SMTV theme.
I know that the third episode had no vocals over the titles, but unsure about the second.
Watching the clip of the 1998 episode, the music is taking me back to a happier time. I liked the simpler arrangement, a shame that it was changed so soon.
Another interesting video on Robin's channel shows a plethora of T4 links over the years (These are all making me feel very old and have me pining for my youth again)
ToasterMan, dbl and DeMarkay gave kudos