Waltz in E Major,Op.posth Waltz in E minor op. posth Waltz in E minor op.post Waltz in E minor, Op.posth. Waltz in E flat major op.post No.21 in c minor,op.posth Valse in E flat major, op. posth No.21 in C minor,Op.posth Prelude in A flat major,op.posth Waltz in E-flat, op. posth