Most Played, Then A to Z: Stable and Built-In Sorts

List songs by artist, then by title, with your language's built-in sort, and keep songs that tie in the order the user chose: why sorting twice scrambles them in C#, and the promise a sort has to make to keep that order, stability.

Updated

Cheat sheet: Most Played, Then A to Z: Stable and Built-In Sorts
Category
Data Structures
Level
Journeyman
Tags
data structures, Linearithmic Time, Sort Key (data-structures), Sorting Algorithm, Stable Sort