Compose musical pieces adhering to the prearranged pattern, utilizing the provided motif.
X:1
L:1/8
Q:1/2=80
M:2/2
K:C
['C C F2 f2 cf Afcf g2', 'f2 cf Afcf'  
X:1
L:1/8
Q:1/2=80
M:2/2
K:C
 C |[K:F]"^by W.Irwin" C | F2 Ac"^tr" f2 cf | Afcf eg"^tr" g2 | F2 Ac fefd | cBAG F2 :| e | 
"^tr" f2 cf Afcf | fcaf egga |"^tr" f2 cf Afcf | bd'c'b af f2 |"^tr" f2 cf Afcf | fcaf eggb | 
"^expresimo" agfe dcBA | BGcB AFF |]  