How is a trill marked tr with 132 over the top played?
The score I am using for Chopin's Nocturne Op.9 No.2, shows a trill in Bar 8 written as tr with 132 over the top.
My problem is how to determine which notes are to be played as the trill or is it simply that F is played with the thumb and the trill is then to be played with middle finger and the index finger?
Thank you kindly for any help you can provide.
Patrick F Nash