Solo violin leaves a player nowhere to hide. Nobody else supplies a harmonic floor, nobody covers a slip of intonation, and nobody rescues a phrase that has lost its way. Paganini knew this, and so did Ysaÿe. Sergiy Bolotny knows it too, and his single *Ukrainian Caprice No. 4: Sycamore & Burlesque* is the work of a musician who treats that exposure as an invitation.