Answer
$ 15,120$ ways
Work Step by Step
A permutation from a group of items occurs when no item is used more than once and the order of arrangement makes a difference.
The number of permutations possible if $r$ items are taken from $n$ items is
${}_{n}P_{r}=\displaystyle \frac{n!}{(n-r)!}$.
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Order is important (lineup implies arrangement, order),
so we count permutations of r=5 bands taken from n=9.
The formula ${}_{n}P_{r}=\displaystyle \frac{n!}{(n-r)!}$ applies.
${}_{9}P_{5}=\displaystyle \frac{9!}{4!}=9\times 8\times 7\times 6\times 5=$
$= 15,120$ ways