Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:Amix
['e2 ef/g/', 'Bc Tf2 eAec']  
X:1
L:1/8
M:4/4
K:Amix
 e2 ef/g/ aecA | e2 ef/g/ ae Tf2 | e2 ef/g/ aeTcA | f<aec Bc f2 :| eAec eAAf | eAec Bc Tf2 | 
 eAec eAAe | face Bc Tf2 | eAec eAAf | eAec Bc Tf2 | eAec Tfdec | dfca Bc Tf2 ||  