Santa1,
It seemed to enjoy sequencing and that’s great, it’s one of the enjoyable features of the Technics keyboards.
When you tweak a midi file that you have downloaded and make it a TECHNICS STYLE creation you can then treat the song like any other song that you have recorded on your keyboard. Extend the song, add drum fills, ect. There are posts on this subject a while back.

Keep enjoying, and I would like to hear your work, John C.