j1=t1 is a/the horn [primitive type/predecessor of brass-wind/lip-reed musical instrument] cut from j2.
tabryjirna is foremost a horn jirna rather than a brass instrument tabra, although it is used as a simple musical instrument. Don't to be mistaken for horn (brass instrument;=jirnytabra). x2 may be species or a specific animal. Swedish horn were usually made from cow or goat. The israelic shoar were usually made from sheep.