There is a really expensive-looking guitar in the pub.
It is the prize for the air guitar contest. You just need to master the three guitar styles to win it.
This is the low-spoiler guide for "Get that expensive-looking guitar" puzzle in Justin Wack and the Big Time Hack. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.