Develop a musical composition by incorporating the given alphabetic framework and motif.
X:1
L:1/8
Q:1/8=300
M:4/4
K:Bb
['de f=efg f_edc BABc dBFD EGce', 'AB cf=ef afef dg^fg bgfg dbca BgAf']  
X:1
L:1/8
Q:1/8=300
M:4/4
K:Bb
 de | f=efg f_edc | BABc dBFD | EGce DFBd | (3cdc (3BAG F2 de | f=efg f_edc | BABc dBFD | 
 EGce dcBA | B2 d2 B2 :| AB | cf=ef afef | dg^fg bgfg | dbca BgAf | Gg^fg =f2 AB | cf=ef afef | 
 dg^fg bgfg | dbca BgAf | feca b2 :|  