sentences:  Usually a pair of these long, slender instruments are blown together; until a few decades ago it was standard practice for one musician to play both of them simultaneously, which seems to have been the case also in Nepal.A double trumpet of this type is depicted on a relief in Chandi Jawri, Indonesia, dated to 1300.The "tirucinnam" is about long and has a wide cylindrical bore; it has a narrow conical bell but no mouthpiece (to facilitate the simultaneous blowing of two instruments).