No matter what name he performs under, singer-songwriter Andrew McMahon has always made himself vulnerable, baring his soul for anyone who listens. First that was as the frontman for pop-punk band Something Corporate, which released three albums in the early ’00s and produced alt-rock radio hits “If You C Jordan” and “Ruthless.” Then it was as the leader of Jack’s Mannequin, with a more piano-driven sound and more personal lyrics. When Jack’s disbanded in 2012 after releasing three albums, McMahon launched a solo career under the name Andrew McMahon in the Wilderness. His third album under that name was released in November 2018, which means it may be time for another reinvention.

Or it may just be that McMahon has finally found the perfect vehicle for his heartfelt self-expression, with an indie-pop project featuring a variety of collaborators. The latest Wilderness album, Upside-Down Flowers, was produced by pop-rock kingpin Butch Walker and features a full string section. The songs were inspired by McMahon’s upbringing and family history, including his own battle with leukemia in 2005. The Associated Press said that the album “has a wide switchboard of emotions and McMahon the skill to expedite the connections.” That’s true for McMahon regardless of his chosen moniker.

House of Blues at Mandalay Bay, 6 p.m. March 23, starting at $25.50 plus tax and fee. 800.745.3000 Ticketmaster