Ko te reo niko te tangi ngātahi o ētahi oro e rua, nui ake rānei, kia tau ki tā te taringa rongo (RTP 2015:95). / Harmony is the simultaneous sounding of two or more notes which are pleasing to the ear (RTP 2015:95). Te Aka/Māori Dictionary
(the links above take you the lyrics and chords for both songs)
eg. the chords in the verse are Am, C and G. They change every 8 counts.
eg. There is tension in the verse when the composer uses the chord Asus2 which is dissonant. The feeling of relief is felt when the chord moves to A, which is a consonant chord.
warning - this is for advanced students