Intro and help with mp. cresc.

[Alexander Wallace]

Hi All, 

I am very new to music and just started playing with Lilypond today.

I'm really liking it so far, but I'm having problems doing a couple of 
things... 

I can't add a 'mp cresc.' label to my notes.... 

Here's an example:

\version "2.16.2"
\relative c'
{
% can't have mp cresc...
d4_\mp-2^( d\cresc e c | d e8 f e4 c) | d( e8 f e4 d c4 d r2)| \break

}

or simpler:

\version "2.16.2"
\relative c'
{
% can't have mp cresc...
d4_\mp d\cresc e c
}

Thanks in advance for your attention and help.