Keroro Song,
Everybody Enter de arimasu!
  Kero! and March
  Afro Sergeant
  Giroro's Best Long Day
  Powered Suits Make No Difference
  Pekopon Invasion Ondo
  Koisuru Shooting Star
  Afro War
  Birthday Song (326 mix)
  Come On! Come On!
  Passionate Learn to Draw Song!!
  Christmas Kerol
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Giroro's Best Long Day (ギロロの一番長い日 Giroro no ichiban nagai hi) is used as background music in Keroro Gunso. It is sometimes heard when Giroro is on screen, and Giroro is also sometimes seen whistling the tune.

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