User blog comment:JayPlays1/Guess the Routine by the Keyword/@comment-10857070-20181005223647

Some more guesses.

6: C'Mon?

12: Taste The Feeling

15: Rasputin

17: September

18: Gimme! Gimme! Gimme! (A Man After Midnight)

25: Idealistic

28: Can't Get You Out of My Head

39: Papaoutai

41: Crazy Little Thing Called Love

46: Dark Horse

47: Beauty and a Beat?

49: Pon de Replay??? (She appears in Lean On's mashup after all)