Hello everybody,I'm currently learning Chopin's Op 69 No 2 (Valse in B Minor) and in my copy (from AMSCO's Library of Piano classics) there is a circle with a capital I (or roman numeral '1') inside it under the 'ped' instruction at bar 49 (bar 16 of the con anima / b major section).I've searched the internet for over and hour and a half now and I just can't find ANYTHING that points to what this might mean.It could be AMSCO's own notation or a typo or maybe it meant to refer to something else (like an asterisk) but...please!!! I'm going mad!!Isn't spoiling my enjoyment of the piece too much, but need to know if it means something specific.PLEASE HELP!!
Couldn't it be a different way of writing una corda ie use of the left pedal?