I don't think he sounds like mika at all. He looks quite a lot like him though.
But his music? He's happy, like mika ok, but tons of artists sing happy songs...
And he has a high voice... but mika doesnt really have a high voice, does he? He can sing very very high, but when he sings with his 'normal' voice, he actually has a, well not low but not a very high voice. While Sliimy has a high voice all the time. mika uses his range, sliimy just has a high voice and doesnt really give evidence of a big range in his songs, he just has a high voice. I think.
Not sure if i expressed myself completely like i wanted, but oh well (:
I do kind of like 'wake up' (like, not love), but i dont think it sounds like mika...