Season 4 (2000-2001)
It is Arnold's birthday, and he has got some great gifts. Pig has given him a "cassette player", but the tape is missing. They all want to play musical chairs, but they cannot play without music. Everyone thinks everyone else has the missing tape until Tiger asks some searching questions. Eventually, when Tiger discovers the missing tape hiding in his hat, the game can finally happen and Arnold's birthday party can go on with no problems.
Video: Puppy Love (2005)