Ok!
Luckily, I have a YouTube channel.
I post library music from all over the place, but all of it comes from Japan.
You can view some of my covers too, categorized by the stage name of "Jypers".
Please don't check my SoundCloud page. It's outdated.
But if you hear anything you like, please let me know, as I own all of the music on there. I can give you the WAV files through Transfer.it.
The Teichiku BGM albums are all in Japanese titles, they don't directly say Teichiku.
Have fun!
htXXs://www.youtube.com/@Ttchubgmlbry-w6q/videos
PS. The newest teichiku BGM videos are from a cassette. The last two from a CD I posted were volumes 7 and 9.
Look on the covers - it says "Multi Use BGM", that's Teichiku BGM.