Proper naming in Pynchon

[Burgess, John]

I'd always understood Frenesi to be a reference to the Artie Shaw number. 
 As Andrew notes, the connotation was that of sexual excitement, if not 
out-and-out delirium.  Too, the song was always known as FRENesi, cuz 
Anglophones don't take lightly to shifting accents around. {Remember the 
ridicule heaped on TV reporters for their attempts at 'NikaRAGwa = 
Nicaragua?}