First make sure that your wallet is on the same network that you purchased the NFT on. You can change the network by clicking on it at the top of your wallet.
Then navigate to the NFT tab.
If using Ethereum Mainnet then you will just have to toggle on NFTs and make them visible. Your wallet should be able to automatically identify all of your ETH NFTs. If it's still not showing your NFT then you can import it manually with the song's contract address and your NFT's TokenID. The TokenID is just the edition # you received.
If using Optimism then you will have to manually import the NFT using the song's contract address and your NFT's TokenID.
How to find your collection's contract address:
Navigate to the bottom of the song page and click "Show contract details". From there you will be able to click on the song contract address which while open up an Etherscan link in a new tab.
Once you open the Etherscan link, you can copy the full contract address in the top left of the page.