Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
Q:1/2=90
M:2/2
K:none
['f2 Bd fBde f2 df eAce f2', 'eAce fBdB fBde']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:none
 f2 Bd fBde | f2 df eAce | f2 de fBde | fgaf eAce :: fBdB fBde | fBdB eAce | fBdB fBde | 
 f^gaf eAce :|  