From their songs to their vision to their constant evolution, U2 have earned their place as one of the most popular and innovative rock bands of all time — and they have an astounding 22 GRAMMYs to show for it.

With their earthy, tactile first three albums, 1980's Boy, 1981's October, and 1983's War, the band positioned themselves at the vanguard of post-punk. Summarily, they hurtled past its parameters with a little help from producers Daniel Lanois and Brian Eno, culminating in their 1987 masterpiece The Joshua Tree.

After ripping up the rulebook with 1991's deconstructionist Achtung Baby, U2 spent the rest of the decade throwing electro-tinged curveball after curveball with Pop and Zooropa. The band then settled into something of an elder-statesmen role with 2000's All That You Can't Leave Behind and its consolidative, substantive follow-ups.

Today, U2 remain intact without a single lineup change — save drummer Larry Mullen, Jr. having to sit out a Vegas residency due to recovery from surgery. Partly as a tribute to their astonishing longevity, U2 released the Songs of Surrender — the third in their Songs of… series — on Mar. 17.

Part retrospective, part reimagining, Songs of Surrender culls 40 songs from their past — including some of their biggest hits, like "One," "Pride (In the Name of Love" and "With or Without You" — and renders them in soft-focus minimalism.

Accompanied by a memoir by Bono, Surrender: 40 Songs, One Story, the album acts as a panorama of U2's singular landscape — the spiritual searches, the self-conscious reinventions, the sociopolitical grandstanding, the triumphs and travails.

With the band back in the ether, here are some answers to common questions about Bono, the Edge, Adam Clayton and Larry Mullen Jr.

What Does U2 Stand For?

While the band shares a name with an American spy plane, the exact origin of the name is unclear. What's established, however, is that they were previously known as Feedback — one of the only musical terms they knew — and the Hype before settling on the name.

In a BBC interview, Bono and the Edge explained that a friend curated a list of names for them, and they chose U2 because they hated it the least. Bono remarked that the name gave off "futuristic" images of "the spy plane" and "the U-boat." (The name still makes him "cringe.")

What Is U2's Latest Album?

After Songs of Innocence and Songs of Experience, U2 have released Songs of Surrender, which shrinks down the often grandiose arrangements of their past work and examines them with a new lens. Produced by the Edge, the album is spread across four discs, each named after a band member.

"I just need to be more silent, and to surrender to my band as being at the core of what I'm trying to do with my life, surrender to my wife," Bono recently told NPR. "And when I say 'surrender,' I do not mean making peace with the world... I'm trying to make peace with myself, I'm trying to make peace with my maker, but I am not trying to make peace with the world.

"The world is a deeply unfair place, and I'm ready to rumble," he continued. "I'm keeping my fists up for that one."

What Is U2's Latest Book?

Bono has characterized the operating principle behind Surrender: 40 Songs, One Story as such: "I was hoping to draw in detail what I'd previously only sketched in songs. The people, places, and possibilities in my life."

Organized around the 40 selections in its attendant album with plenty of off-ramps and asides, Surrender illuminates hidden corners of Bono's history, faith and psyche like never before.

Why Is Bono Called Bono?

Born Paul David Hewson, Bono was nicknamed Bono Vox as a teen in Dublin, when he and his friends were part of a surrealist street gang named Lypton Village.

As they were all assigned nicknames, Hewson assumed the moniker Bono Vox — the name of a hearing-aid store near where they grew up, which itself came from the Latin word Bonavox, which means "good voice."

Are U2 Touring In 2023?

Come fall 2023, U2 will return to the stage after a four-year absence for a Las Vegas residency focusing on their classic Achtung Baby album.

In an unprecedented move, Mullen won't be part of the proceedings, though the band looks forward to his return.

"No one is more disappointed than us that Larry won't be joining us in Vegas," the Edge told The Telegraph, adding: "In the history of U2, you can count the shows we've missed on the fingers of one hand."

What Was U2's Biggest Hit?

From a Billboard Hot 100 standpoint, the U2 song that's made the biggest commercial splash is "With or Without You," that skyscraping, eros-meets-agape wonder from The Joshua Tree. (That song stayed at No. 1 for three weeks; "I Still Haven't Found What I'm Looking For" remained in the same position for two.)

And when you listen to the hushed, humbled rendition of "With or Without You" just released on their new album, you hear not only how their artistic achievements have resonated through the decades.

Instead hear the four men not as rock titans, but as human beings — searching, striving, and ultimately surrendering.

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