Meditative Ballad
There are five stanzas structured as follows:
x
y - is the first  stanza of four syllables per line both rhyme 
     and both are a kind of refrain
a
R1
R2
a -  this stanza has an ABBA rhyme scheme, but the two 
      middle lines are refrains to be repeated; each line is 
      eight syllables long  
R1
a
a
R2 - the rhyme scheme in the previous stanza is repeated  
        in the opposite order, and the refrains repeat BAAB 
x
R1
a
R2
y  - the x & y lines repeat, like the refrains word for word; 
      the middle line is still eight syllables long and repeats 
      the rhyme from the above stanzas.
y    repeats from the first stanza but in the opposite order 
x  - repeats from the first stanza but in the opposite order.