A first try at making music on the Free plan used to be turned down, because the Free allowance does not cover a song. Now your first song is on us, up to two minutes long, in the app and on the web. A longer one needs a balance or a subscription, and the message says so. In the web music studio, a note tells you before you press Generate that the gift covers the song. The web video studio now checks the welcome video gift again after a video is turned down or finished, so it no longer offers a gift you have already used.