Markos Giannopoulos is a well-known blogger based in Greece. He is an expert on the music industry and a trusted source for the latest news. He is the founder of Top40-Charts.com, which provides relevant information about the music industry and interviews with the biggest stars. Markos is passionate about helping aspiring artists reach their goals, and his blog is a great resource for those looking to learn more about the industry. With a wealth of knowledge and experience, Markos is a valuable asset to the music industry.