G5 Power pc Garage Band

I bought a G5 in 2009 used. Similar to a used car right

I can find parts for an old cessna or toyota but I cannot find parts for an old power pc.

Gas still runs in those vehicles. Yes gas no longer runs the old G5, OS X 10.6 and up do not repect the old power pc.

Where can I get garage band that was installed on the G5 when it was new, similar to finding a wiper blade for the back window I thought, though that seems to be much easier.

I have had to reinstall from the CD-s a couple years ago and I have also read the package files and garage band is empty.

I will not download illegal software or unauthorized dmg-s.

I have digital performer, ableton and others running great on this old beast, but I need garage band to work with a students...

I bought the old mac, I did not retire it and do not have plans to either. Just like I did not retire the old Toyota right

Southwest air is still running their old jets...I want to run the G5 as long as I can.

THanks in advance!