Project acts, such as Coconuts Musume, Berryz Kobo, Cute, V-u-den, Aya Matsuura, and Maki Goto.

Aside from musical acts, Tsunku has also produced soundtracks for anime and video game series such as Rhythm Heaven and ClassicaLoid.

On October 1, 2006, it was announced that Tsunku had created a new company called TNX consisting of singers such as Ami Tokito and other people including Tatsuya Naka, a magician who appeared on Hello!

His works are mainly pop-oriented with catchy melodies and romantic, idealistic and sometimes even humorous lyrics, the latter in particular often being pitched to appeal to a young audience.

Some of his works in the late 2000s were particularly mature and hard-hitting (considering the ages of the girls singing them), such as the Morning Musume singles "Kanashimi Twilight, "Onna ni Sachi Are" and "Resonant Blue".

Although his own work as a soloist and in Sharam Q tends to lean towards pop-rock, he is best known for working with various arrangers to create highly melodic, richly-textured sequencer-driven electronic dance music which often features synthesizers, as well as guitar riffs and solos which sometimes hint at hard rock or heavy metal influences (such as in Morning Musume's "Ambitious!

Project's groups tend to revolve around the members taking turns at singing lines and sometimes even small parts of lines in succession, building up to a chorus in which most (if not all) members sing in unison rather than using vocal harmonies; any harmonies that are present in the songs are often sung by other people (including Tsunku himself, who records his backing vocals so as to appear to sing "along with" the girls on their studio recordings during key parts of songs such as during choruses and on certain phrases, in a voice an octave lower than theirs).

[14] In March 2014, Tsunku announced on his blog that he had laryngeal cancer, which he found out after having throat surgery due to an unspecified condition.