He has composed musical scores for films including Gooli, Eddelu Manjunatha, I Am Sorry Mathe Banni Preethsona, Sidlingu, Parari, Madarangi, Naanu Avanalla... Avalu, and Aatagara.
Seelin received the Karnataka State Film Award for Best Music Director for his work in Sidlingu.
In 1999, he began working as a chorus singer under the mentorship of Hamsalekha, a prominent figure in the Kannada music industry.
Seelin's notable playback singing work includes songs from films like Ondagona Baa, Sarvabhoma, Madana, Dharma, Nenapirali, and Sixer.
Subsequent projects included I Am Sorry Mathe Banni Preethsona, which received critical acclaim for its background score, and Sidlingu.