Suda had made his singing debut as a group with his co-stars in the movie "Kiseki - Ano hi no sobito -" which was released in January this year and had even appeared live on TV Asahi's "Music Station". Although he had sung the CM song, his identity was kept a secret until much later and everyone was surprised that he could sing that well. It was then that a record company approached him to make his debut as a singer.
With regard to this, Suda revealed that he had been unsure if he should become a music artist and wondered what he could do. He decided to go ahead with this and hoped that there would be a day when he can write and perform his own songs in front of everyone.
Sources: Nikkansports / Sanspo