Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
['A>A Adcd d2 cd |{f} edef d2', 'G F>GFE DEDF', '(de) fdec d2 cd B2 B>c BAFA', '^c d2 DF A2 AA']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
"^Spirited" A>A | Adcd d2 cd |{f} edef d2 de | fgfe dc B(c/d/) | edcB A3 || G | F>GFE DEDF | 
 AGFA !fermata!d2 !fermata!A2 || (de) | fdec d2 cd | B2 B>c BAFA | d2 D>F A2 AA | B2 B=c BA z || 
 ^c | d2 DF A2 AA | BecA !fermata!d4 |]  