Preview songs to put in the "favorite track"

[Mayazyl]

The first time I entered the "favorite track" a window popped on my android and it had a preview of songs and I could either like or click next and that way I could have a bigger and better "favorite track" for me. Though I was in a hurry and could not do that for long and I don't seem to find a way to go  back to that.. Does anyone know how?