A strong social media presence is a must-have attribute in today’s world.
No matter what products and service you offer and what kind of talent you want to showcase to the world, your target audience is likely to be on social media. So, you should be there as well.
Moreover, people like things that are popular.
Why would anyone want to watch a video or listen to a song that only has three likes?
Why would anyone bother to read your tweets when you only have seven followers?
When it comes to social media, people attract people. Views attract views. Eyeballs attract eyeballs. The more likes/favorites/retweets you get, the better are your chances of getting followers. The same holds true for other social networking services like YouTube, Soundcloud, and Facebook as well.