The Phrygian scale is an organization of pitches encompassing the Phrygian Mode. If you are looking at the piano, it would be all the white notes from E to E. The pattern of tones are as follows:
Semitone, tone, tone, tone, semitone, tone, tone
The order is in reverse for the descending scale.
Listen to this Phrygian scale and then repeat the recording to sing along. Notice where the tones and semitones fall.
T = Tone (Whole Tone)
ST = Semitone