O

 O  is the 1 5 t h letter of the English alphabet. The 11 t h episode of  SESAME STREET  was the 1 st of many episode s to be sponsored by this letter.

Song s about O

 * " Would You Like to Buy a n  O  ? " ( Ernie & Left y )
 * " That ' s the Letter  O  " ( Queen Latifah, Prairie Dawn & Merry Monster )
 * " Soul  O  "

Sketch e s about O

 * Speech Balloon -  O  - Open
 * T he Type write r -  O  - Owl