To answer your question, there is no specific song called "Anak" in Filipino.
However, there is a very famous song called "Anak" by Freddie Aguilar which is in Tagalog, a major language spoken in the Philippines.
"Anak" is a popular song about a father's love for his child. It's a touching ballad that has been covered by many artists over the years.
Are you perhaps thinking of this song? Let me know if you'd like to know more about it. 😊