Hi and welcome to the DUC!
As songs are too large for emails, I like the free version of
WeTransfer
Upload your file to
https://wetransfer.com/ and enter the recipient/s email address/addresses.
WeTransfer emails your recipient/s and includes a download link for your file. Send files up to 2GB for free.
(WeTransfer Pro costs – you can send up to 20GB at a time – but I just send multiple small files for free)