Of the pleasant little things, I will add the ability to save the sung song in memory, with the ability to listen to it later in the application on the phone or on the console itself - this way you can "self-teach" singing, work on your mistakes. Songs can also be posted to the public, where other participants who own such a prefix can evaluate your performance. It is also important to be able to sing directly from the YouTube application those songs that are not in the catalog of the console itself.