i thought so too... it doesn't help that i can't read khmer. i used to rely on my mom to tell me who sings what but after awhile i realized she's not too accurate and i just try to decipher the voices myself!
are you referring to the song in which he mention about taking his girl to angkor wat with his new "rut yun"? not sure if that was his song but i LOVE that song!! (you can drive someone nuts with it if you play it over and over.)
i also like the "chi kabei" song. again not sure if that was en yeng's.