Gohar Vardanyan (sponsored by Strings by Mail) performs and teaches a lesson for Etude No. 23, Op. 38 by Napoléon Coste (1805–1883). This comes via her YouTube channel where she has been posting a number of etude lessons (check it out and subscribe). Vardanyan’s technique, filled with controlled articulation, works well for this etude and you can pick up many ideas about detached articulations and muting techniques.
Sheet Music: The Coste Etudes Op.38 (Schott) are available at SMP.
The Chanterelle edition seems to less available.
SBM also seem to out.
thanks for the lesson