"Rolling Down the Sandhills/Running Up the Sandhills" is from Wiggle Bay.
"C'est Wags, C'est Bon" is also from Wiggle Bay but appears to be re-recorded with Anthony's bass voice emphasized during the lyric "The doggie with the dancing feet."
"Balla Balla Bambina" is from Toot Toot! and has been re-recorded so that the main melody doesn't have just Greg and someone else singing but also a bass voice.
"An Irish Dinosaur Tale" is based on "Pipers Waltz" but has Dorothy singing some lyrics.
"Would You Like To Go To Scotland?" is based on "A Scottish Christmas" from Yule Be Wiggling but with lyrics.
"London Barcarolle" is the third barcarolle version The Wiggles have done to the tune of Offenbach's Barcarolle. Simon Pryce sings this version. They have previously done a Sydney Barcarolle on Sailing Around the World, and a Christmas Barcarolle on Santa's Rockin', both of which feature Sam Moran singing. Dorothy the Dinosaur (Carolyn Ferrie) also did a Seashell Barcarolle for her TV series in 2009. On November 2012, Anthony Field posted "French Barcarolle" on Facebook sung by Gino the Genie.
"Ooey Ooey Allergies" has undergone several revisions as documented on their website and Youtube channel.
* The original version of The Allergy Song was featured as a behind-the-scenes video clip by Murray showing Greg, Simon, and Dorothy (in costume) singing in studio. The version posted on their Youtube on February 2012 "covers a wider range of allergies (this version includes eggs and dairy).", includes Wiggly dancers and Gino the Genie, and Jeff doing the Wiggle groove. Also the Wiggles are promoting the organization Anaphylaxis Australia.