This is by a Dutch band from the 70’s called Focus. The song is called the House of the King.
If you like Jethro Tull, then you’ll like this business as well. It’s the opening to this tv show called Saxondale that I sorta like.
Here’s another Focus tune that is pretty rad that is the ending credits to the same show. Hocus Pocus
Yes, that is Mormon Gladys Knight introducing that band. The song is usually about 6 minutes long, but they’re playing it way fast here. Fyi, it has some sweet yodeling mixed with face melting guitar.