At the beginning of each unit, we pick out some of the key sounds of Irish for you to practise. Here are the most important sounds in Unit 1:
| Bonnleibheal_1/Aonad_1/KeySounds_01.mp3 | mise | (slender s) | I, me | |
| Bonnleibheal_1/Aonad_1/KeySounds_02.mp3 | slán | (broad s) | goodbye | |
| Bonnleibheal_1/Aonad_1/KeySounds_03.mp3 | duit | (slender t) | to you | |
| Bonnleibheal_1/Aonad_1/KeySounds_04.mp3 | leat | (broad t) | with you | |
| Bonnleibheal_1/Aonad_1/KeySounds_05.mp3 | muid | (slender d) | we, us | |
| Bonnleibheal_1/Aonad_1/KeySounds_06.mp3 | siad | (broad d) | they |