ROCK Kendrew’s Lounge, Aliquippa, 9 p.m. March 30, Johnny Holiday, (classic), $2; 9 p.m. March 31, Paparazzi (dance), $3. Longbranch Saloon, New Brighton, 9:30 p.m. March 31, Half Dozen Krackerz, $2. 25. I Will Sing of the Mercies (Bryce Inman, James Henry, Sr. Fillmore Word Music Group) (Psalms 89:1 KJV) I will sing of the mercies of the LORD for ever: with my mouth will I make known thy faithfulness…