Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['(FG)EF (DF)Ad (cd)Bc (Ac)eg', 'd2 (de) (fe)df (ed)ce (dc)Bd (cB)Ac (BA)GB']  
X:1
L:1/8
M:4/4
K:D
 (AG) | (FG)EF (DF)Ad | (cd)Bc (Ac)eg | (fg)ef (de)cd | BcAB GBAG | (FG)EF (DF)Ad | (cd)Bc (Ac)eg | 
 fage dfec | d2 d2 d2 :| (de) | (fe)df (ed)ce | (dc)Bd (cB)Ac | (BA)GB (AG)FA | GFGE DCB,A, | 
 (FG)EF (DF)Ad | (cd)Bc (Ac)eg | fage dfec | d2 d2 d2 :|  