Irish 'American Idol' finalist Carly Smithson sings U2 classic with new band.

Carly Smithson made it to the top five or six on "American Idol" two years ago but her career has gone from strength to strength since finding her niche; rock, more rock and soul.

About a year ago Smithson, from Dublin and now living in L.A., joined forces with former band members of Evanescence Ben Moody, John LeCompt, and Rocky Gray to become their lead singer.

The band is called We Are The Fallen.

For's Monday Mashup the band sang their version of the U2 classic "With Or Without You" and Smithson does a mega great job.

Watch the link here-

"Growing up for me, U2 is massive where I'm from," says Dublin-born frontwoman Smithson.

"I'm very proud to be Irish and it's a cool thing to [cover U2]... This is the first time I ever sang U2 song in public."

The original song, from U2's ten-times-platinum 1987 album "The Joshua Tree," hit No. 1 on the Billboard Hot 100 in 1987, the year Smithson turned four.