One of the more ancient of the reed instruments, the gederaglini horn sounds its strange, hollow timbre as two players blow air through its central gourd  from either end at once, varying pitch as they cover and uncover the horn's many apertures. The gederaglini is sometimes referred to as the "lover's horn," and is ceremoniously played by two lovers at once at most Zork weddings.

In the Z'Orchestra, the gederaglini finds home between the wertmezers on the left and the frobophones on the right. The nambinos are before it.

SOURCE(S): Zork: Nemesis (game, design documents)