Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/16
M:2/4
K:Bb
['vF2B2 B2D2 vC2vcB AFGA', 'cFAc dBFB DBFB (vDB,)B,2 vdBFB DBFB AcFA']  
X:1
L:1/16
M:2/4
K:Bb
"_mf" vF2B2 B2D2 | vC2vcB AFGA |{c} BABc defg | (fd)ce dA(3(uBAG) | vF2B2 B2D2 | vC2vcB AFGA | 
{c} BABc defg | (fd)ce dBB2 ::"_f" vdBFB DBFB | AcFA cFAc | dBFB DBFB | DECE"^4" (vDB,)B,2 | 
 vdBFB DBFB | AcFA cFAc | dBcA BF(3(GAB) |1 FDCD (B,2F2) :|2 FDCD B,4 |]  