For humans, singing is as natural as speaking. Not that everyone is good at it, but almost everyone has some ability already built in. Most of us sang songs as children. People might sing in church, while walking down the street, driving in the car, or in the shower. There’s nothing more natural than singing, and music is a language everyone can understand no matter where they’re from.
There are a few who cannot match pitch or reproduce a note that they hear, but this is exceedingly rare. A tiny percentage of people, less than 5%, have a genetic condition called amusia, commonly referred to as “tone-deafness.” Research has shown that even most people with poor singing voices can hear music just fine.
Not all singing uses words, or lyrics, and even when the lyrics are in a foreign language it doesn’t diminish enjoyment of the music by performers or listeners. Music is the only truly universal language, and singing is the purest form of that language which everyone can immediately understand.
Watch famed tenor Andrea Bocelli sing the classic song Con Te Partirò in Italian:
Is it hard to learn to sing?
Because your voice is an actual instrument, which is unique to each person, there are many elements that must come into balance if you want to consistently produce a pleasing sound. There are people who grew up around music and singing and others who seem to possess a beautifully natural singing voice. They have a real advantage and might make it look easy, but in reality, learning to sing really well takes a lot of practice and hard work.
Anyone can improve if they want to, regardless of their starting point. Teaching yourself is hard, but there are excellent materials available online, many for free, and also books and blogs full of useful advice on how to sing better. There are also great teachers, who can save you a lot of time by showing you exactly what you need to focus on to improve your technique. Even if you can’t afford a teacher, it’s a good idea to have your progress checked by a professional from time to time. It’s also a good idea to attend concerts to study the singers and get inspired to keep working at it.