The first mode is according to the Greek tradition the Dorian mode. The mode belongs to the diatonic system. In the music pieces the sound is marked with Pa , which sets Pa as the base note. The reflecting sound for this mode is noted with either or
The First mode uses the diatonic scale of Pa.
In eirmologika pieces the master notes are Pa and Di; in stiherarika Pa and Ga or Ke and Ni. In papadika Pa, Ga, Di, and Ke. In eirmologika the ending notes are in the note Pa, in stiherarika the ending notes are also Pa. In papadika the ending notes are also in Pa.