The astronauts on board the space shuttle Atlantis were awakened at 2:59 a.m. Tuesday morning to the song "More" by Christian recording artist Matthew West.
Only four astronauts are aboard for this mission. Two of crew have been tasked with retrieving a broken ammonia pump outside the International Space Station.
NASA engineers want to examine the pump to figure out why it failed last summer.
The mission, slated to last 13 days, is the last for NASA's three-decade old shuttle program.