Space Adventures #16

Rocky Jones, Space Ranger, must rescue his crew from an alien planet where they have been captured and brainwashed by the alien leader Claxon, who intends to use them as slaves. Rocky uses a hidden radio transmitter planted on one of the crew members to track them down, and together they devise an escape plan involving a remote-controlled decoy ship to distract their captors. After blasting off and narrowly escaping an orbital jet's attack, the crew successfully returns to Earth, with the aliens' mysterious transmitted song following them home.