Uphill, Both Ways
From Halopedia, the Halo wiki
 
Uphill Both Ways is an recently released Halo Reach soundtrack on Bungie.net.
The soundtrack appears to be the background music for the Multiplayer Madness trailer.<object width="480" height="385"><param name="movie" value=""></param><param http://www.youtube.com/v/I2C8du5_P7A&hl=nl_NL&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/I2C8du5_P7A&hl=nl_NL&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="385"></embed></object>
It's available via this link Uphill Both Ways
