Antonín Dvořák's Cello Concerto, op.104 is a favorite among cellists, audiences, and flute players. It features the flute prominently in many solos and dialogues with the soloist.
At the end of the first movement, in the first flute part, Dvořák writes a high B to high C# trill (B3C#4). Most flutists, including myself, tend to forget how to play that trill since it's seldom used in the flute repertoire.
Here are some fingerings:
The above trill is easier to remember since the starting fingering is similar to the regular B3 fingering. Unfortunately, the trill above doesn't sound easily and the C#4 tends to be weak.
This second fingering is slightly harder to remember, but much better overall. Please note that to sound B3 you should start and finish the trill with the trilling finger up.
Historical Note: Antonín Dvořák (1841-1904) wrote his cello concerto op.104 in 1894-1895.
(Posted on the FLUTELIST forum on 2005-02-21)