Oriģināls: Trumpet Method. Jacob's Ladder. William Bay. B-Flat Trumpet sheet music. Trumpet Method composed by William Bay. For Trumpet. Book.
Tulkojums: Trompete metode. Pētījums. Franču Song. B-Flat Trumpet notis. Trompete metode sastāvā William Bay. Trompetei. Visi stili.
