Sharon Isbin performs Enrique Granados' Danza No. 5 (1890) at the White House Classical Music Student Workshop Concert. In the 1 hour session this is from about 7:42-12:50.
This is definitely my favourite trill to do on my flute (a buffet crampon 228). I hope this will be helpful to you!. Attribution is greatly appreciated, but not necessary! i'd love to see what you've done with my sound. :).