Compose a tune that integrates the letter-based representation of the determined musical pattern and the given melodic idea.
X:1
L:1/8
M:2/4
K:Eb
['BG/B/GF G/F/ E2 F GBcG B4 e2']  
X:1
L:1/8
M:2/4
K:Eb
 BG/B/GF | G/F/ E2 F | GBcG | B4 | e2 Bc | e2 cG | BGBc | B4 | BCEF | G2 B2 | cBGF | E4 |]  