You must be at least 13 years old to use SongPush.
According to the General Terms and Conditions (T&Cs) for SongPush Creators, there is a minimum age of 13 to use the platform. This is stated in § 2 paragraph 2 of the T&Cs:“All offers from SongPush are aimed exclusively at taxable entrepreneurs within the meaning of § 2 para. 1 UStG and Art. 9 VAT Directive with a minimum age of 13 years.”
Please note that this is the information from the mentioned T&Cs and it is advisable to check the latest information on the SongPush website to make sure that nothing has changed.
The T&Cs for Creators can be found here.