<human>:  What is the difference between scat singing and yodeling?
<bot>: The main difference between scat singing and yodeling is that scat singing is a type of vocal improvisation which invovles making up random sounds and syllables, while yodeling is a type of singing in which the voice rapidly and repeatedly switches between the chest voice and the head voice to produce a distinctive melody. Scat singing has its origins in jazz music while yodeling is traditionally associated with folk music.