Because the Band tolerates no soloist besides the Frontman, substitute in rule 2.5.1 “Tour” for:

The Tour is considered pending until the set of Band Members changes (either by a Musician switching from Band Member to Hanger On or vice versa or by a Band Member going idle) or until it is resolved by the Frontman.

The Frontman may resolve a pending Tour at any time. When the Frontman resolves a pending Tour, one of these 4 situations will occur:

I - If there are less than two Band Members, nothing happens.

II - If there are at least two Band Members with different styles, the Frontman must decrease the Fame of the Band Member who made the Tour by one and make them a Hanger On.

III - if all Band Members have the same style and there is exactly one Band Member who is Showing Off the Frontman must increase that Band Member’s Fame by B where B is the number of Band Members.

IV - Otherwise, the Frontman must increase the Fame of each of the Band Members who is not Showing Off by C where C is the number of Band Members, divided by two, rounded up.

If either situation II or situation III occur, the frontman must reassign each Band Member a new style via the process used for new Musicians and all Band Members then become Hangers On (and thus cease to be Showing Off).

In any of the 4 cases, the Frontman must make a comment on the pending Tour as to which way he resolved it.

the text:

The Tour is considered pending until the set of Band Members changes or until it is either resolved or failed by the Frontman.

If at any time there is only one Band Member and a Tour is pending, it may be failed by the Frontman with a comment to the Tour saying so.

The Frontman may resolve a pending Tour at any time, provided there are at least two Band Members. When the Frontman resolves a pending Tour, one of these three situations will occur:

I - If there are at least two Band Members with different styles, the Frontman must decrease the Fame of the Band Member who made the Tour by one and make them a Hanger On.

II - If all Band Members have the same style and there is one and only one Band Member Showing Off, the Frontman must increase that Band Member’s Fame by B where B is the number of Band Members.

III - If all Band Members have the same style and either none of them is Showing Off or at least two of them are Showing Off, the Frontman must increase the Fame of every Band Member not Showing Off by C, where C is half the number of Band Members, rounded up.

When situation II or situation III occurs, each active Band Member will be randomly assigned a style, either Rock or Techno, which will replace their previous style. Each Band Member will then be notified of their style via private message by the Frontman, along with the name of another Musician, randomly selected, who has the same style as them. All Band Members then become Hangers On (and thus cease to be Showing Off).

Immediately after resolving a Tour, the Frontman must make a comment to the Tour specifying which of the three situations occurred.

For the sake of dice rolling, which is pretty fun sometimes, replace in rule 2.2 “A Note of Discord” the text:
“along with the name of another Musician who has the same style as them.”
with:
“along with the name of another Musician, randomly selected, who has the same style as them.”