Christmas.”He and his family want to hear that voice more during the other 11 months, a desire that led to a deal being announced Monday to sell an equal stake in the rights to Bing Crosby's estate to Primary Wave Music.It's another example of how the sale of catalog rights has become a booming business, with most involving rock artists who write their own music — Bob Dylan, Paul Simon, Neil Young and Stevie Nicks are examples.