I'm playing the Haydn trumpet concerto in Eb at the moment and I'm trying to decide once and for all how the trills should be played. I have one of my teachers telling me that they should be played from the note. ie: f to g, and my other teacher (who I agree with more) to trill from the note above like a baroque trill. ie: g to f. From what I can work out, the style of trills in the classical period was changed after Haydn wrote the concerto by none other than Mr Hummel. Hummel changed trills to start on the note of the trill. I haven't been able to find a recording of the Haydn with trills played from the note, they are all baroque trills, but all of the recordings of the Hummel concerto are trilled from the note. I don't have a Groves dictionary in front of me so any help would be appreciated. Thought?