What was the film about a guitarist who met boy in desert and chased by three with bows arrows?

You're likely thinking of the 1984 film "The Adventures of Buckaroo Banzai Across the 8th Dimension".

Here's why:

* Guitarist: Buckaroo Banzai is a rock star, neurosurgeon, and physicist who plays the guitar.

* Boy in the desert: He encounters a young boy named New Jersey in the desert.

* Three with bows and arrows: Buckaroo Banzai is pursued by the "Black Lectroids", a group of aliens who use bows and arrows as weapons.

Let me know if you have any other movie mysteries to solve!