Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:4/4
K:C
['c2 c2', '_ef _eddc_Bc (3dc_B']  
X:1
L:1/8
M:4/4
K:C
|: C,2 _E,G, C2 CG, | C_EG_E c3 c | _B2 F_B _Bd (3dcB | c2 c_B G_EDC | C,2 _E,G, C2 CG, | 
 C_EG_E c3 c | _B2 F_B _Bd (3dcB |1 c2 c2 c4 :|2 c2 c2 c2 g2 |: gfd_e f2 fg | f_ecd _e2 _ef | 
 _eddc_Bc (3dc_B |1 c_BGFG_Bc_e | gfd_e f2 fg | f_ecd _e2 _ef | _eddc_Bc (3dc_B | c2 c2 c2 g2 :|2 
 c_BGFGF_EF | GFFGG_E_EG | F_E_EFFDD_E | C2 (3C_B,_A, G,2 (3F,_E,D, | C,2 C,2 C,4 ||  