Extra considerations:
Sounds like the Accordion and Banjo can be found in the MOTU Universal Instruments Soundbank. Information provided from https://tinyurl.com/7ewbujdp
Musical Artifacts is an open source web app helping musicians to find, share and preserve the artifacts they use for music production. It's worked on by volunteers in their free time.
As it grows, so do hosting and bandwidth costs. We don't track you or show ads, so we need donations to keep the website up and maintain download speeds.
To contribute without donating money, see this page