It doesn't seem to be listed the the music section of the extras. The only place I can find it is on YouTube, and both there and in the credits the song fades out prematurely.
Update as of 2021:
Thanks to VGMdb we now have all the composers and people involved in the soundtrack for Donkey Kong Country Tropical Freeze:
Audio Supervisor: Scott Petersen
Music: David Wise
Contract Audio: Chris Carroll, Kenneth Bassham, Bobby Arlauskas, Clark Crawford, Matt Piersall, Matthew Thies, GL33k LLC
Music Supervisor: Kenji Yamamoto
Music/Voice Recording: Daisuke Matsuoka, Minako Hamano, Shinji Ushiroda, Riyu Tamura
As far as I can tell, the soundtrack for Donkey Kong Country Tropical Freeze is not for sale (yet). As such, one needs to turn to unofficial fan made rips instead.
I found this on Youtube. It's 4mins 13sec. Is that still too short?
Edit: Someone on Youtube commented that: "The only bad thing about the song is that it fades out". So it would suggest that's how the song is.