Hmmm…I thought the idea was that the song was the signal that told the Jedi it was safe to come back…and Obi will change the song in the next scene.
Outside the temple, it should sound like it’s coming out of a cheapo P.A. speaker or something.
https://www.youtube.com/watch?v=b_gUB0pNQVU
For scenes inside the temple, a nice echo or reverb.