Image Item No. Description By  bb0261  Music Builder Roller Catalog: Parts: Explore 7  plug025  Music Builder Sound Cartridge Catalog: Parts: Explore 11  plug018  Music Builder Sound Plug with Banjo pattern Catalog: Parts: Explore 7  plug008  Music Builder Sound Plug with Duck pattern Catalog: Parts: Explore 8  plug004  Music Builder Sound Plug with Flute pattern Catalog: Parts: Explore 6  plug015  Music Builder Sound Plug with Tuba pattern Catalog: Parts: Explore 5  plug002  Music Builder Sound Plug with Violin pattern Catalog: Parts: Explore 8  plug011  Music Builder Sound Plug with Xylophone pattern Catalog: Parts: Explore 8