“I want to live in a world where my glass is always half full!” That’s the inspiring maxim of New Orleans master drummer Herlin Riley. On his second Mack Avenue Records release, Perpetual Optimism, the longtime anchor of the Jazz at Lincoln Center Orchestra preaches his silver-lined gospel on 10 tracks whose joyous spirit and contagious swing are sure to convert any listener to the bright side. Since his Mack Avenue debut New Direction, all four of Riley’s bandmates have been making major waves across the modern jazz scene, attesting to the master drummer’s Art Blakey-like ear for talent and sage musical guidance.