The forbidden riffs are songs that a person tries playing when trying to learn how to play a guitar. You are not allowed to play these songs when you visit an instrument shop. After visiting a guitar shop, a person would play a riff to test the quality of the equipment. People were allowed to play a tune of their choice for them to know whether to buy a particular guitar or not. Musical instrument shops came up with a list of songs which when a person played, they were to be stopped and asked to play another riff. Different songs are being added to the list so that when people were trying out new guitars, they had to refrain from playing them.
New Guitarists used a riff that was simple to learn while testing out a new stringed instrument. These riffs were easy to master and even those guitarists who were not professionals would easily play them. When an artist wants to learn how to play guitars, they opted for the forbidden riff because of how easy it was for them to master it. This would not be used to assess whether you were good at playing an instrument or not. When going to buy guitars, customers ask for feedback from the owner, and it was a challenge to determine whether your customer is a good guitarist or not. This is because the riff that was strummed is that which is easy to learn, making it impossible for them to realize their level of skills.
With a song being riffed severally at a store by different guitarists, the riff became overplayed, becoming less enjoyable. It was on rare occasions that you could walk into a music instrument shop and fail to notice a person who is playing the forbidden riffs. When an artist picks up a guitar, their choice of song to play would be the forbidden riff. Being a store manager, this meant that a person had to listen to the riff severally. The riff eventually lost its taste, making it necessary for you to ban it from your store. When an artist came to buy instruments they would be forced to learn a different tune from the one that is regularly riffed. This was to bring diversity to the riffs played at your store where different people play different tunes.
Since the riff was played by learners, they did it poorly despite being a great riff. When you hear a newbie play the forbidden riff, you cannot be impressed by the way the riff was played it. Since the forbidden riff was mainly used by inexperienced guitarists, listening to them became annoying as the rhythm of the riff was ruined. The forbidden riffs majorly include great iconic songs that have to be riffed correctly. When you riff the song poorly, it becomes annoying to those listening to you given how popular the riff is. This led to the tunes being banned at the stores to prevent people from playing a popular song poorly given that they were to join the musical community. It became annoying for an artist who desires to venture into strumming guitars to play a popular song poorly.