Silent Siren's songs are as cute and sunny as the band's image. The founding members met in 2010 while working as models for a fashion magazine, and they started a group after discovering a shared love of music marrying punchy pop-rock to high-pitched, Vocaloid-style-style singing. But ballads like the piano-driven “I×U” show they're capable of bringing the same sweetness to a downtempo song.