My question is simple, but (for me) of importance: Did Chopin started the trills in his pieces "by default" from the upper note or from the main note? Most people play Chopin with trills beginning with main note. However in the book from Eigeldinger "Chopin - pianist and teacher" there are 2 citations from contemporaries, Mikuli and Stirling, who said that Chopin started his trills normally from the upper note, like Bach did e.g. So my question is, does anybody know of another primary source how Chopin started his trills? It is so that my piano teacher insists on starting the trill with the main note, and in for the following example in the Berceuse this manner gives me problems, both technically and musically wise: My teacher likes too that all 4 trills are started from the main note. She said, the rule is that at least starting with Beethoven, one starts with main note instead upper note. But I am wondering whether Chopin is an exeption from the rule. Already for the first trill there is a problem: one gets an interruption of the run this way, to start the trill with b double flat instead with c flat. If I start with c flat, it gets a continuous run. So, why on earth do play so much people Chopin trills with startpoint from main note, if Chopin (who was very fussy with exact coding of his music and interpretation) played it the other way round with starting from upper note, what often sounds VERY different? What's your opinion, and most of all: can anybody provide another primary source about how Chopin started his trills?