P. Martin Ostrander's Dangerous Four Series

Who Are The Dangerous Four?
There is no greater feeling than performing for an audience on
a stage late at night. Just ask Jake, better known as Left-y, lead
singer of The Dangerous Four. He does that all the time along
with his three friends: Nick, the base player known as Rightey,
Craig, the lead guitarist known as Rousey, and Ryan, the
drummer known as Drummey.
Together, the four of them make up the mysterious band known
as The Dangerous Four. No one knows who they really are
because of the robes and masks they wear, and that is how they
want it. Not everyone sees it that way, though. Soon a rumor is
started that The Dangerous Four will have a huge concert, but
The Dangerous Four do not know anything about it. They go
only to discover a rival band planning to steal their good name.
Along with performing in a televised local battle of the bands,
how are The Dangerous Four going to make sure their secret
says a secret? Join Left-y, Rightey, Rousey, and Drummey as
their adventure unfolds in The Dangerous Four.