Okwu mmalite: Isiokwu a na-ewebata ụzọ isi họrọ ihe egwuregwu ụmụaka. Egwuregwu egwu egwu na-ezo aka na ngwa egwu egwuregwu ụmụaka nwere ike ibunye egwu, dị ka ngwa egwu analọg dị iche iche (obere mgbịrịgba, obere pianos, ịgbà, xylophones, clappers osisi, obere mpi, gongs, ájà, ájá ájá...
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