MAT KEARNEY The raspy-voiced Kearney is settling comfortably into his blended folk-pop and hip-hop. The singer/songwriter clearly understands the groove of rap when he drops rhymes over shuffling beats and at the same time channels the fun of retro-rock like a veteran. He can also be a formidable Elvis Costello-like rocker, twisting pop into bouncy yet quirky rock numbers. It’s his earnest words and music that make Kearney a long-term contender. With Robert Francis. $20-$23. Amos’ Southend.