I have mixed feelings about Ranka and Sheryl's songs. But my favorites are What 'bout my star @Farmo, Welcome to my Fanclub's Night, Northern Cross, Diamond Crevass, Aimo and Seikan Hikou.
I like most of Sheryl's songs because they're well composed and May'n does a great job vocalizing the cords. She has a bit of a pop music voice, but that's part of her appeal. I love her emotional tones so I generally prefer her soulful songs
What 'bout My Star @ Farmo definitely takes the cake for me, when the two girls sing together, it just sounds magical. The simple but slowly maturing tone in Ranka's voice and the professionalism in Sheryl's voice, you have a bit of both worlds and it's just perfect.
I'm still waiting for the full version of Sheryl's Aimo