Oasis defines a compilation as any project where there are multiple artists and/or bands (at least two or more artists/bands independent from the customer or the customer's band) performing on a CD.
If your project is a compilation you must submit artist agreements completed and signed by the artists/representative of each band performing (Oasis provides artist agreement forms and also accepts personal contracts that you may have with the artists/bands and/or email correspondence showing that the artist/band has agreed to be a part of the compilation) along with a track list which highlights all of the different artists/bands and which songs they are performing.
If you are the representative/owner of a record label/production company in which all of the artists/bands performing on the compilation are under your company artist agreements are required, as well.
If you are the representative/owner of a record label/production company in which all of the artists/bands performing on the compilation are under your company artist agreements are required, as well.