BY MELISSA RUGGIERI/AJC Music Scene

Maybe one day, a few more years into a career that has already triumphed with stadium sell-outs, Grammy Awards and a lauded Super Bowl halftime performance, Lady Gaga will take a cue from Bruce Springsteen and park herself and a piano on Broadway for a few months.

Because as enjoyable as it is to witness the sleek lighting, tilted stages and Cher-like quick changes from one spangled ensemble to another during her substantial production, Lady Gaga is at her most powerful and captivating seated alone behind her piano.

At the Tuesday night stop of her “Joanne World Tour” at a sold-out Philips Arena, Gaga was in an extraordinarily grateful mood...