Ever-shrinking profits are keeping bands on the road for long stretches these days -- even when they don't want to be -- so the news that Aerosmith's Steven Tyler is currently out of a job shouldn't come as a surprise.

Oft-feuding acts like Aerosmith are bound to come apart at the seams eventually. But bills still need to be paid, and if a member isn't down for the cause the tour train will keep rolling with or without them.

Frontman foibles are everywhere at the moment. A recently reunited Faces is looking for someone to replace Rod Stewart, while Oasis is seeking a replacement for Noel Gallagher. Velvet Revolver is casting about for its new Scott Weiland, while Queen has said a fond goodbye to its Freddie Mercury replacement, Paul Rodgers.

Some choices will put the band on the scrap heap. Here's 10 acts who found ways to survive with new voices singing their old songs.

1 Journey. New singer: Arnel Pineda. Founding guitarist Neal Schon was alerted in early 2007 to a YouTube clip of Arnel Pineda and his Filipino group, the Zoo, covering Journey's Faithfully. Schon knew he was on to something good: Within a year Pineda signed on as the sixth singer in Journey history and was performing live with the group to ecstatic reviews. Revelation, the first Journey album with Pineda on-board, was a huge success, prompting genuine comparisons to Steve Perry, who led the group to stratospheric success for the better part of 20 years.

2 Boston. New singers: Tommy DeCarlo and Michael Sweet. You know former Boston lead singer Brad Delp was amazing if it took two singers to replace him. Boston leader Tom Scholz took a page out of the Journey handbook in 2008 by hiring Tommy DeCarlo, a Home Depot employee who was discovered singing Boston tunes on MySpace, to replace Delp, who committed suicide in 2007. DeCarlo's singing sidekick in the new version of Boston is Michael Sweet, the longtime singer-guitarist for pop-metal act Stryper, who now handles lead duties on More Than a Feeling.

3 Alice in Chains. New singer: William DuVall. The addition of William DuVall to Alice in Chains is hardly a shock to the system. Before appearing with Alice in Chains for tour dates in 2006, he was a longtime associate of the group's guitarist, Jerry Cantrell. DuVall was officially named a member of the band in 2008, and appears on the group's 2009 album, Black Gives Way to Blue, its first new recording in 14 years and first since the drug overdose of lead singer Layne Staley in 2002.

4 Sublime. It's unclear what the new version of Sublime will be called following given the cease-and-desist levelled against the group by the estate of late singer Brad Nowell, who suffered a fatal heroin overdose in 1996. Remaining members Bud Gaugh (drums) and Eric Wilson (bass) are working with singer-guitarist Rome Ramirez, 21, who made his live debut with the band last month during the trio's one and only performance as Sublime. The following day, a judge quashed the reunion.

5 Foreigner. New singer: Kelly Hansen. The voice behind every Foreigner hit is Lou Gramm, but his decision to leave the group in 2003 hasn't felled these classic rock legends. Former Hurricane singer Kelly Hansen, recruited in 2005, is now firmly ensconced in Foreigner, who last month released Can't Slow Down, their first album in 15 years and highest-charting entry since 1987.

6 Yes. New singer: Benoît David. Line-up changes are old hat for these prog-rock kings. All told, there have been more than a dozen incarnations of Yes, though the only versions worth remembering are those featuring longtime frontman Jon Anderson. His severe asthma opened the door for Canadian singer Benoît David, who last month (after a year's worth of touring with the group) was named the permanent singer for the Owner of a Lonely Heart hitmakers.

7 Styx. New singer: Lawrence Gowan. True, the man known to Canadians simply as Gowan has been singing with Styx since 1999. But at the time his membership was made permanent, the group had been together 27 years -- each one of those featuring the band's very popular singer and leader, Dennis DeYoung. His less than amicable departure led to a litany of lawsuits and the inclusion of Gowan, whose solo hit, A Criminal Mind, is now a fixture of Styx concerts.

8 INXS. New singer: In-progress. INXS persevered following the death of superstar singer Michael Hutchence by adding in 2005 new singer J.D. Fortune. He proved to be an adept addition, albeit short-lived. Earlier this year, Fortune split from the group (he said he was fired; the group said he quit), prompting the group to recruit a bevy of fill-ins (among them Brandon Flowers of the Killers and Rob Thomas of Matchbox Twenty) for the new INXS recording.

9 Jefferson Starship. New singer: Cathy Richardson. A recent tour by Jefferson Starship was reportedly much better than expected, especially given the line-up changes which have reduced the group to a showcase for its lone original member, Paul Kantner. Janis Joplin-like Richardson is filling the role of Grace Slick, who has long since left the group, in the Jefferson Airplane side-project.

10 Creedence Clearwater Revisited. Stu Cook and Doug Clifford feel there's plenty of chooglin' to go around, even without Creedence Clearwater Revival singer, guitarist and songwriter John Fogerty. In 1995, Fogerty's former bandmates formed Creedence Clearwater Revisited with singer John Tristao and released Recollection, a two-disc set consisting exclusively of songs made famous by the earlier CCR.

mdevlin@tc.canwest.com