“Hey!” is the newest violin-infused pop number from Melbourne-based singer/violinist Xani Kolac’s and drummer Mark Leahy’s outfit known as The Twoks. Addictive as ever, these two take a bit of a new approach on their power-packed, danceable music. Kolac uses her violin in just about every style and octave possible to create a unique range of stringed sounds. Supplemented by Leahy’s timely touch of the tambourine and slap of the bass drum, its Kolac’s chants of “Hey” and “Oh” that guide through the whole upbeat, chaotic three minutes. With lyrics that encourage “battling it out on the floor,” it’s a tune about fighting to be noticed, which is how you will feel when you start singing and dancing along.