Well, as I picked up Ode, it made a wierd sound, instead of it's normal sound, it made a glugging sound, i'm not sure what it is. :odeko

Try going to the collection, highlighting odeko, and pressing ether square or x.
You may be able to hear it again.

They all make weird sounds in WLK. Marny is one of my favorites.

i heard it like five times, now i had to hear it again, seesh.

I forget which buttons, I think if you're on the character, you can press maybe circle and square, to hear two different sounds they make. Not positive though.