"Stop!" is another well known up-tempo swing chart from Anita O'Day and the Gene Krupa Orchestra. The arrangement (transcribed from the Elton Hill original) not only features your vocalist and your band shouting 'Stop!', but also your Trumpet 2. Gene Krupa often featured Anita O'Day and Roy Eldridge together in the same arrangements. Let Me Off Uptown and North Carolina are other examples. This is a fine swinger from the height of the Krupa band. The vocal key is Bb.