Symphonic Etudes, Op. 13: Supplementary Variation 1, RSW Op. 13 Anh.4 – Supplementary Variation 1, RSW Op. 13 Anh.5 – Supplementary Variation 1, RSW Op. 13 Anh.3 (Live at St John’s Smith Square, London, 1991) by Radu Lupu