Add a feature so users can merge multiple artists into a single "parent artist" for their song & concert statistics
Here's a good example: Neil Young (7 concerts attended), Neil Young & the International Harvesters (2 concerts attended), and Neil Young & Crazy Horse (6 concerts attended) are 3 separate artists for my personal statistics, but they're all really just Neil Young. I would like a feature that allows me to link the statistics of artists I choose. This way I can see all songs played and concerts attended for all 15 times I saw Neil Young in a single list. This feature should just be implemented for the users' personal statistic views (not globally). That way the merging is personalized based on how each user wants to view their own statistics.