Leto found the rock band "Thirty Seconds to Mars" in 1998, in Los Angeles, California with his brother Jared. Their debut album, Thirty Seconds to Mars was released in 2002, which hadn't collected a huge attention.
Shannon released his second album "A Beautiful Lie" in 2005, which made him popular over the world. Later he released various albums including This Is War, Love, Lust, Faith, and Dream.
Leto has worked with some of the popular stars, his famous collaboration was with Antoine Becks, The Wondergirls, and performed occassionally alongside "Street Drum Corps".
Shannon is also famous as the drama artist for his ability to blend traditional and experimental drum techniques. During his productions along with famous bands Pink Floyd, The Cure, Led Zeppelin, and The Who, he played electronic drum, which made him famous as a drama artist.
Leto is active on social networking like Twitter, Facebook, and Instagram. Moreover, he has around 522K followers on Instagram and 515K followers on Twitter. He often posts pictures on his social networking profile.
Looking at his personal life, Shannon had a long list of girlfriends, who are Monica DePandi, Kate Hudson, Corina Taylor, Audrina Patridge, Lauren Hasting, Jules Mordovets, Lana Del Rey, Lara Bingle, Abbey Cameron, Jasmine Waltz and Kristina Colonna.
Currently, Leto is dating his new girlfriend Jeannine Burnaeva. The couple has not married till date, may be they will marry soon.
Being a Musician, he has featured in various albums from which he collects a big chunk of salary. As of 2017, his estimated net worth is $10 million through which he finances for his expenses.