Many Cal fans, most notably Cal Band director James Berdahl, were enraged over what they saw as James' theft of their song. A bitter exchange ensued between Berdahl and James for the next several years concerning the legal and ethical grounds for James' adaptation of the song. Finally, on February 18, 1969, UCLA lawyers were told by the Copyright Office of the Library of Congress that "Big C" had never been copyrighted, and was therefore in the public domain. However, whenever Cal plays UCLA and "Sons of Westwood" is played, Cal fans sing a parody ending, "but damn you, it's 'Big C.'" Likewise, whenever Cal plays "Big C" UCLA plays their signature "tag" at the end, which is a part of "Sons of Westwood" but not "Big C".