TN (CD) ĩno ya mbere, Maitũ nĩ Ma Iitũ yaumire mwaka wa 1999 na nĩ ya marebeta 15. Marebeta maya nĩ ma gũkũngũĩra Maitũ nyina wa ciana ciothe cia gĩcagi, maũgĩ maitũ ma kĩndũire, o hamwe na bũrũri witũ wa Kĩrĩnyaga maitũ witũ ithuothe.
Marebeta maya nĩ ma gĩthomo na ndũrũhĩ. Megũtũma wĩcirie, wĩcũranie, wĩrute, na ũtheke.
Thani Nyũmĩrĩru (TN) nĩ rĩo rĩtwa rĩa Gĩgĩkũyũ tuonete rĩagĩrĩru rĩa CD (Compact Disc). “Floppy Disc” na yo no ĩĩtwo Thani Manyegenya (TM).