Came here to note that contrary to what is said here, Lollypop is not "new", nor is it representative of current so-called "GNOME-isms".
It uses UI idioms and technologies (gtk 3) of its mileage, 2017.
A lot of its UI idioms are quite unique to Lollypop, as well.
A lot of its UI idioms are quite unique to Lollypop, as well.