sentences:  House merely says, "Accidents happen," while handing over the leash.Wilson walks out with Hector, followed by House seeing them dramatically leave while the song "Ain't No Reason" by Brett Dennen plays.When House reveals the recently bought cane, as he exits the elevator the music playing is "Highway to Hell" by AC/DC
  
  The song playing while Wilson is leaving with Hector is "Ain't No Reason" by Brett Dennen.