You don't need Mickey Mouse ears to hear the similarities.

Tourism Australia's latest ad jingle is close enough to Disney's Mickey Mouse Club theme tune that it could struggle to defend a legal challenge, a music expert says.

In the wake of the Federal Court's ruling in February that Men At Work pay for ripping off parts of their pub classic Down Under from Kookaburra Sits In The Old Gum Tree, Queensland Conservatorium of Music popular music program convenor Donna Weston said the chord progression in Tourism Australia's jingle was about "80 per cent the same" as the Mickey Mouse theme song.

"The 'dada dada' is almost exact - same chords and very similar melody," Ms Weston said.