The first episode of Girls aired on April 15, 2012, exactly five years ago. Six seasons in five years is more aggressive than the usual one-season-per-year pace of most shows. You could say Girls was growing up fast.
The series has featured more than 389 songs (per Tunefinder), not including the music of the finale tomorrow. Music writers routinely covered episodes, reveling in the impact the show’s music had on the depth of the storyline.
Covers of male songs performed by women were sprinkled across the episodes, in many cases spotlighting younger and less famous females. HBO could certainly afford the rights to the original recordings, so using these covers became a deliberate choice, not a plan B.