It is in a single-part form: a (measures 1-4) + a1 (measures 5-8).

For it to be in A minor, the leading tone G# does not function, and G natural is used instead. Therefore, this is considered a church mode, specifically the Aeolian mode with A as the final.

The two phrases are similar, but while the harmonic cadence of the first phrase (a) is Tonic → Dominant → Tonic, the harmonic cadence of the second phrase (a1) moves as Tonic → Subdominant → Dominant → Tonic from measures 5 to 8. From this, although the slur ends at measure 6, the harmonic cadence does not conclude there, so one should play with awareness of the following measure.