Burgmüller -- 25 Progressive Pieces, Op. 100 (Alfred Masterwork Edition)
Practical Method for Beginners, Op. 599: Schirmer Library of Classics Volume 146 - Piano Technique and Exercise Book - Easy-to-Read Piano Scales Book
Franz Wohlfahrt - 60 Studies, Op 45 Complete for Violin | Essential Violin Etudes and Exercises for Beginners and Intermediate Players | Classical Violin Technique Book for Students and Teachers