Def Leppard

Members of Foo Fighters and Weezer joined in too.

A 53-song tribute featuring dozens of musicians.

That makes it the most successful tour of either band's career.

Costly LP was dead in the water — then the 11th-hour single exploded in the U.S.

He decided Def Leppard could continue for as long as they wanted to at homecoming show during grunge era.

Plus: Aerial 'Abbey Road' photography, an Alex Van Halen sighting and ventriloquist REO Speedwagon.

All-star trek lands at No. 4 on Pollstar's Live 75 report.

He doesn't see anything promising on the horizon.

Here's how Def Leppard's biggest hit almost didn't make the album.

One of the biggest albums ever.