Double S 301 is the next K-Pop group to stitch together four to five different good songs for one that confuses you but sounds good nonetheless!

The SS501 sub-unit is finally back with "Pain," in which they're also another K-Pop group to botch English with repeats of "I'm so pain" that is both catchy and causes pain for your inner grammar nazi - yet you just can't stop singing it.  The song is very hard to fit into a genre with its Latin and trot-influenced sound; its instrumental is perfectly beautiful with the piano in the gentler moments.

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Check out their dance moves above!  Also check out their individually themed MVs below.