He has penned lyrics for over 350 songs in about 130 movies, including Vettom, Mallu Singh, Kanaka Simhasanam, Oru Marubhoomikkadha, Romans, Sound Thoma, Chattakkari, Nadodimannan, Aamayum Muyalum, Happy Wedding, Kuttanadan Marpappa, and Aanakkallan.

On the occasion, he recited his poem that holds the principles of humanity as its core, titled "Verukalude Vedhantham".

[5] He won an URF National Record[6] in 2021 for writing 4200 songs in three lyrics areas (Drama, Album, and Cinema).

[9][10] [11] Alunkal co-operated with music directors of three to four generations, including V. Dakshinamoorthy, M. K. Arjunan, A. R. Rahman, Raveendran, M. Jayachandran and Gopi Sundar.

[12] Alunkal worked with A R Rahman for the album One Love which acted to ensure the position of the Taj Mahal among the seven wonders of the world, on the behalf of the government of India.

During the canonisation ceremony of Mother Teresa at the Vatican, Pope Francis released the poem "Theresamma" written by Alunkal, and the Indian pop singer Usha Uthup rendered her voice for the same.