Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/8
M:4/4
K:Amix
['fA (3AAA', 'ff d2', 'fABA gABA gABA fgaf g2 eg edce'  
X:1
L:1/8
M:4/4
K:Amix
 fA (3AAA f2 ef | gB (3BBB g2 ge | fA (3AAA f ef | gfed cBce | fA (3AAA f2 ef | gB (3BBB gegg | 
 fgaf g2 eg | edce d2 de :: ff d2 ff d2 | f/f/ece fece | dfBf dfBA | GFGA BAFA | (3GFG GF GABc | 
 dcde f2 ef | gfed cdeg | gece dcde :|"^Variation for A part" fABA fABA | gABA gABA | fgaf g2 eg | 
 edce d2 de :|  