They're a rookie group under Nega Entertainment.

There's 3 of them:

Teo (percussion), Yun (guitar, vocal, maknae), and Sam (English, vocal, guitar).

They don't use much auto tune and sound the same with and without it.

Go look them up! 

Then come back and tell me what you think.

I love them!!! Their music is pretty.

I recommend Super Hero and the Korean version which is called It Must Be Nice. As well as One More Step.

PS. Teo is pretty and looks a little (not too much, but a little) like Taemin, I think. He has Tae's sherlock hair (short ver.).