Not the music, but the actual production/mastering itself. It was produced by Mayer himself, along with Steve Jordan whom he played with in the John Mayer Trio. After the abysmal sounding Heavier Things album, this new one is a nice surprise. I ran a few tracks through Audacity to confirm visually what my ears heard. Very little compression, no clipping whatsoever. The music itself is great too; some favourites include Gravity (previously off the John Mayer Trio live album TRY!), and Slow Dancing in a Burning Room. Definitely less 'pop', and more mature sounding. More along the vein of the type of music Mayer enjoys playing.