I used the instrumental by toreador1977. Very nice cover!
A karaoke version would not have worked, because the back-up vocals needed changed.
I am Sam.
That Sam I Am
I don't like Sam I Am
Do you like green eggs and ham?
I do not like them, Sam I Am.
...
https://www.youtube.com/watch?v=yYKDUsq0_YA
This is German1378's instrumental of Rocket Queen. It's not available on karaoke, that I can find. This instrumental is excellent, though. Kudos. I tried to do it justice. I have no idea what's going on with the video near the end. Probably running out of RAM, as it's a long song. It's just me, though, so no great loss.
...
https://www.youtube.com/watch?v=1jUIeYF-GXg