Saxophone

While watching a Baby Einstein video...

Swe-cha: o-one

Mommy: Yes, trombone

Swe-cha: oh-one (with emphasis on the "h")

Mommy: Yes, that is a trombone

He then leans over and points to the first bear and tries one more time...

Swe-cha: ahx-one

Mommy: Ah, Saxophone!

Swe-cha: [happy] *claps*