Charles-Louis Hanon
Exercise Five (Preparation for the trill with the 4th and 5th fingers of the right hand)
Overview
(1-2-3-4-5) We repeat, that the fingers should be lifted high, and with precision, until this entire vol- ume is mastered. (1) Preparation for the trill with the 4th and 5th fingers of the right hand.（Source）
