Purchasing this will give you the rights to use TIGER's DiffSinger library for commercial use. Please contact me with any questions! If you would like to use TIGER's DiffSinger library for a charity event, or for a non-profit organization, please contact me directly as depending on the situation, the price may be less. Included: - License agreement (text file) - Follow-up from me with a "serial code" (license #) NOTE: TIGER's DiffSinger library is FREE to use. If you'd like to use the library for free/personal use, please follow the link here to download and install! github.com/spicytigermeat/tiger_diffsinger/wiki/Installation