Okay kiddo, so Sengalipuram Anantarama Dikshitar was a very smart man who lived a long time ago in India. He was a scholar and a teacher, which means he knew a lot about many different things and helped other people learn too.
Dikshitar was particularly interested in a type of music called Carnatic music. He studied it and wrote many songs in this style, which became very famous. Carnatic music is a type of classical Indian music that has been around for a very long time and is still played today.
Dikshitar also wrote many books about other subjects like religion and philosophy. He was very respected and people admired him for his knowledge and wisdom.
Even though he lived many years ago, his teachings and music are still remembered and loved by many people today.