*The New York Post is reporting that Def Jam CEO Antonio “L.A.” Reid had to cancell a key speech at a top music event last week because his son was seriously ill.

Hundreds of industry folk paid up to $1,000 each to hear Reid speak at the Billboard 2010 Music & Money Symposium at the St. Regis last week, reports Page Six.

But hours before the appearance, delegates were told that his son was in the hospital with a head injury and needed surgery.

Reid has four sons, from 6 to 29 years old, as well as a daughter, 8.