U2 made Apple's latest product showcase the stage for releasing their new album, Songs of Innocence. It is a heartfelt exploration of the band members' childhoods: their discovery of rock and roll, their shock at the violence in Irish politics. It is another self-conscious return to the sincere, reverb-heavy version of themselves that won them acolytes across the world.

The album is good, better than their most recent work. It revisits their big themes: Bono's loss of his mother at age 14, the Troubles, the search for God. And careful listeners will be reminded of a much misunderstood and hated album when they hear it.

U2 has used a dominant corporate behemoth to launch an album before. In 1997, from the lingerie section of a New York City K-Mart, the four Dublin bandmates announced a tour in support of their album Pop, the electronica-infused work that marked the zenith of their more sinister, ironic phase. That world tour was one of history's most successful, featuring an elephantine television screen, a giant lemon mirror ball, and a golden arch.

But the album was a total commercial and critical failure in the United States. Which is a shame, because Pop is one of the best rock albums of the 1990s and perhaps the best of U2's career.

The general feeling among American fans and critics was that the band had completely lost their moorings. It did not help that U2 scheduled the tour first, which forced them to release the album before they were fully happy with it. The irony of the K-Mart stunt was totally lost on the public, and the album's response to the popularity of electronic club music was folded into that misunderstanding. The conventional wisdom was that U2 had undergone a full commercial sellout, and that Pop was their cynical reading of market and musical trends.

Nothing could be further from the truth. Pop is U2 at its absolute creative peak, a record that combines different themes of their previous work in a more mature way. Yes, it is a reactive album. The idea of rock-God and celebrity-humanitarian Bono donning a black sweatshirt and shadowboxing with one-summer house music fads like The Prodigy seems somehow undignified. But it's undeniable that at the time groups like the Chemical Brothers, Orbital, Fatboy Slim, and Daft Punk looked every bit as powerfully iconic and iconoclastic as The Clash and the Ramones did decades earlier, especially in Europe's music scene.

Whereas The Prodigy merely trafficked in the energies of human dissipation, Pop darkly grapples with them. Songs like "Miami" and the "The Playboy Mansion" are obvious indictments of commercialism. Previous incarnations of U2 would have shown a pious, almost Jansenistic horror toward the blandishments of pop culture. On Pop, Bono seems to have recognized that commercialism doesn't constitute an absence of spirituality, but exists on a surfeit of it, a spirituality that had overflowed the dams of traditional religion and family.

If Coke is a mystery

Michael Jackson...history

If beauty is truth

And surgery the fountain of youth

What am I to do

October 1997: Bono performs at Michigan's Silverdome. | (AP Photo/Werner Slocum)

On the track "MoFo," Bono is practically wincing at the spiritual clichés of U2's pose as a voice in the desert on The Joshua Tree and The Unforgettable Fire, singing: "Looking in the places where no flowers grow / Looking for to fill that God-shaped hole."

He's still searching. For a bare expression of bereavement over the death of his mother, when he was 14, we did not have to wait for 2014's "Iris." It was all there on "MoFo," the bewildered son drowning his grief in dry drum loops and grinding wild guitar effects, and crying over a lost boyhood that somehow extended his childishness into adulthood:

Mother, am I still your son

You know I'm waiting for so long to hear you say so

Mother, you left and made me someone

Now I'm still a child but no one tells me no

Pop offers less elliptical pleasures as well. The track "Staring At the Sun" is U2's greatest radio-friendly single since the 1980s, though we almost never heard it on American radio. "If You Wear That Velvet Dress" is a sultry, sad torch-song, written by a broken man inviting a broken woman to seek consolation in each other, even if they are using and being used by one another. "Do You Feel Loved" contrasts the pleasure of a lover in the bedroom — "with my nails under your hide" — with the physical trials of real love:

Love's a bully, pushing and shoving

In the belly of a woman.

Heavy rhythm taking over

To stick together a man and a woman

This album's darker vision also allowed U2 to re-imagine some of their earlier work live. Perhaps no U2 tour had a better moment than when the giant PopMart screen went dark, and guitarist The Edge sang "Sunday Bloody Sunday" solo, with just his own guitar line backing him up. Dressed up in a very silly-looking cowboy hat and black vest, and fighting a crowd far too large for this intimate performance, The Edge's sweet vocal performance turned what had been a raging anthem into one of grief. The anger over British soldiers killing 14 people in Derry streets was now a plaintive wail that also lamented the waves of violence and death it unleashed in retaliation.

It is on that theme that Pop really climaxes in "Please," which is U2's masterpiece. The song's arrangement is a seductive, inebriating mix of a bass riff and guitar. The accompaniment could be the backdrop to a song evoking a youth wasted on ecstasy and raving. But the lyrics are addressed to an IRA terrorist, someone steeped in the colors of the flag, who wears the mandate of "all your lessons in history" like an explosive vest.

July 1997: U2 performs in Rotterdam. | (AP Photo / Paul Bergen)

The cover of the single for "Please" drew bright 90s pastels over the faces of Sinn Fein leader Gerry Adams and Ultra-Ulsterman Ian Paisley, men known then for making bloody mayhem, not chuckling or weird Twitter. But this song is no gentle tweak. Bono sympathizes with and ferociously rejects the sociopathy of terrorism, where one can deliver a "sermon on the mount/from the boot of your car" (a car bomb, in other words) and feel nothing but self-pitying anger.

September

Streets capsizing

Spilling over

Down the drain

Shards of glass splinters like rain

But you could only feel

Your own pain

The group's performance of this song at the MTV Music Awards was genius, and a much-needed contrast to Jewel, Spice Girls, and Puff Daddy, or even the safe irony of Beck. But this kind of huge and subtle political statement was totally unwanted in American music then. The appearance did nothing to juice radio play or album sales stateside. The only reaction it got was Chris Rock cracking that Bono looked like the Unabomber.

Pop is a trashy, vulgar, spiritually insightful, heart-shattering record. It takes a vandal's thrill in deploying the self-declared world's greatest rock band to deface rock and roll. It shapes the echoing blips, tape distortions, and drum loops of electronic music into a political statement as substantial and tightly packed as a pipe bomb. It rummages through the refuse of modern pop culture and finds a God worth loving still. And its critical failure was a miscarriage of justice.