Notable among a number of songs commonly played and sung at various events such as commencement and convocation, and athletic games are: "I’m a Jayhawk", "Fighting Jayhawk", "Kansas Song", "Sunflower Song", "Crimson and the Blue", "Red and Blue", the "Rock Chalk, Jayhawk" chant", "Home on the Range" and "Stand Up and Cheer."

What are two events non-sports at which school songs are often heard?