cadenza at beginning of song

[chip]

I am working on a song that has a free time cadenza at the beginning, 
but am having a problem with the other instruments rests for the 
duration of the cadenza. Also, the notes of the cadenza run to the right 
edge of the page and disappear, the notes don't wrap down to create 
another staff.
thanks -
Chip

Below is a fragment of the piece -

TrumpetOne = %\transpose d e
   \relative c'' {
   \global
R1
f8 e r4 r8 c f e
f e r4 r f8 e
e2 d
b16 as b c d c d e f2
e8 d r4 r8 d e d
e d r e f4 e
c2 cs
d b
}

Alto = %\transpose d b
   \relative c'' {
   \global
   \cadenzaOn
   c16 d ef f g2. bf4 af g2. f16[ ef d f] d ef c2 d8 bf16 c g1 c16 d ef 
f g2 c8 b a16 g f e d c d e2 b c1~ c1  \bar "||"
   \cadenzaOff
a8 g r4 r8 f a g
a g r4 r a8 g
g2 f
b16 as b c d c d e f2
g,8 f r4 r8 e a g
a g r g a4 g
e2 e
f g
   }