The wavs are user created instrumental tracks to create songs. Each song requires a certain amount of tracks for each instrument and for each person singing. One song could be made up with 100 tracks or more. Sometimes they made 20 different versions of the same song etc etc.
Cubase software works directly with the computer, adaptors, the musical instruments, drums, mics via a sound board of some kind ( I am just a helper trying to get help for a band.) http://www.steinberg.net/en/products/cubase/why_cubase.html
8 entire songs were created but all divided into individual tracks totaling 3,000 or so wav files and were mistakenly deleted. Approximately 1,300 have not been able to be recovered. It had been discovered that the recycle bin was not large enough to hold all those wav files as they are so large which is why we decided to try Recuva.