This is a very popular way for many to record however in the music industry, this is a no no. Professional people will always record to songs that are completely tracked out. This is the best way to get a truly professional mix. When you compare a song that was recorded using a 2-track (beat instrumental) to a song that was tracked out, there is no comparison. The tracked out version will always win. Using beats is okay for demos but never for professional industry standard releases. Get the tracked version when possible.