I search the Internet for free Garden Grove MIDI source files and I then preview it in a DAW (digital audio workstation) for length and general accuracy; then I try to pick the best match (assuming there’s several files to choose from). I also check Ultimate Guitar. There are commercial source files available but I usually don’t bother with those unless the user wants to pay for and provide that particular MIDI source file.
Unfortunately, I could not find anything for Garden Grove so if you have a couple of alternate choices, I’ll do some more searching. If you prefer, I’ll choose one from the list and run with that.
Santeria is here but it could probably use an update: Santeria OPB 2018-08-27 - Sublime