There have been ten separate casts since 1998 including:

The Friends of Broadway Sing Broadway
The Friends of Broadway Hit Hollywood
The Friends of Broadway Celebrations Tour
The Friends of Broadway Seize the Day!
The Friends of Broadway: Broadway & Beyond Tour
The Friends of Broadway Imagine Tour
The Friends of Broadway 2005 Tour
The Friends of Broadway Revival Tour
The Friends of Broadway 2008 FOB-ULOUS Tour
The Friends of Broadway 2009 Roots Tour