If you've been waiting patiently and humming such hits as "One Headlight" for the four years that have elapsed since The Wallflowers delivered their breakthrough second album, the wait will soon be over.

The L.A.-based rockers are due to deliver the long-awaited follow-up to 1996's "Bringing Down The Horse" in September when "Breach" arrives. The album's first single, "Sleepwalker," should hit stores and radio in early August.

Other songs on the eleven-track album include "Wasteland," "Delivered," and "Hand Me Down" as well as "Murder 101," a call-and-response duet between Jakob Dylan and Elvis Costello.

The album, co-produced by singer-songwriter Michael Penn and Macy Gray producer Andy Slater, is The Wallflowers' first effort since their "Bringing Down The Horse" went on to sell 4.1 million copies. In the downtime, the band turned up on the soundtrack to 1998's "Godzilla" covering David Bowie's "Heroes."

When "Breach" arrives, the album will also

boast guest appearances from Pixie-gone-solo Frank Black, guitarist Mike Campbell of Tom Petty & The Heartbreakers fame, and Aimee Mann-Fiona Apple producer Jon Brion.

The Wallflowers are set to kick off a North American tour this fall.