The Legend of Zelda: Skyward Sword Glitches

Song of The Hero
When retrieving the Song of the Hero from the Three Dragons, it can become impossible to proceed in the game if the player does the following:
 * Begin the Thunder Dragon portion of the quest.
 * Talk to Golo the Goron.
 * Retrieve the Thunder Dragons' part of the Song of the Hero.
 * Speak to Golo again before heading to either Faron Woods or Eldin Volcano.