Singer Kenna has teamed up with his hip-hop comrades for a taxing mission that goes beyond making records in the studio. The Interscope Records signee, along with rappers Lupe Fiasco and Santigold, began a trek to the top of Mount Kilimanjaro on Jan. 7 for Kenna's charity, Summit on the Summit, which brings awareness to the global clean water crisis. Today, marks day four of the trek. The group is currently at 14,851 ft of the 19,340 ft peak, according

Kenna, who is also joined by a panel of scientists, humanitarians and actors Emile Hirsch, Jessica Biel and Isabel Lucas, will trek a total of seven days along a 50-mile route to the mountain's Uhuru Peak. The team has been tracking their movement with GPS devices, discussing water issues with experts and interacting with followers on Twitter, MySpace and Facebook, all documented at

The journey to the top of Africa's highest mountain is a result of Kenna's personal dealings with the global water issue. The Grammy nominee's father saw the dangers of waterborne illness firsthand as a child when his brother died as a result of drinking tainted water.

Before their strenuous climb, the trekkers underwent intense training to prepare for the mountain's physical demands and extreme changes in weather. Temperatures were at nearly 90 degrees Fahrenheit on the first day of the expedition and will drop to close to 0 degrees on the last day.

The crew's climb will be chronicled in a 90-minute documentary slated to air March 14 at 9 p.m. on MTV.