(CNN) -- Paul Sacco says searching for his daughter feels something like bleeding out. All the hope, heartache and anxiety that go into it leave him feeling diminished. 

But the Colorado lawyer and amateur guitarist has managed to bottle up some of that energy, spending hundreds of hours creating what is both a tribute to Aubrey Sacco and a monument to his sorrow: a 14-song album he has published to Internet vendors. 

"Finding Aubrey" includes 11 songs written and performed by Sacco at his home studio, as well as the last three songs Aubrey herself recorded at home before the 23-year-old disappeared in April 2010 while hiking alone in Nepal. 

The case is unsolved, and the album -- for sale on iTunes and other outlets -- is a fundraiser for an investigation into her disappearance. 

"So many people who know us say, 'What is it like?' or 'I can't imagine what it's like to have your daughter go missing,' " Paul Sacco said in a phone interview. "The album tells the whole story: feeling helpless, feeling like you want to celebrate your daughter, feeling like she may never come back and diminishing yourself as you look for her." 

Aubrey disappeared toward the end of a five-month post-college trip in Asia. The 2009 University of Colorado graduate, who had a double major in psychology and art, went to Sri Lanka to teach yoga to vacationers before traveling to India to study yoga and volunteer to help schoolchildren with music and art. 

She hoped to do charitable work, perhaps hooking up with a nongovernmental organization abroad, her dad said. But she vanished on the last stop of her trip, in Nepal's Langtang National Park, where she hiked for at least two days. 
Yes, but what type of trip was her entire trip?
Aubrey disappeared toward the end of a five-month post-college trip in Asia. The 2009 University of Colorado graduate, who had a double major in psychology and art, went to Sri Lanka to teach yoga to vacationers before traveling to India to study yoga and volunteer to help schoolchildren with music and art.