Emil Bulls - River

It’s from a whole album of their metal covers.

I’m now this crazy all hats IT person

Well, looks like they needed a Jack of all Trades instead of a Master of None.

The factory must grow!

Pretty unhelpful responses so far. Enter

exit

to exit the current screen and return to a selection of installed OS/Kernels. You should be able to boot normally from there on. Once logged in, try

update-grub 

which should repair your bootloader config.