After installing the extension, users have access to some Songrium functions — playback interface for trial listening, visualizations of derivative works, and Arrow Tags — directly on Nico Nico Douga or YouTube.

It enables a user to jump to the chorus section and other key parts of a song. It also visualizes the song structure consisting of chorus and repeated sections. These functions make it easier for a listener to find the desired parts of a song, thereby facilitating an enhanced listening experience. This function is based on results of music analysis by Songle.

Derivative works appear as colored circle icons which rotate around the original song. The orbit, size, color, and velocity of a circle icon represent attributes of a derivative work. The color indicates the category of each derivative work. When most icons are the same color (i.e., most derivative works are in the same category), the user can easily notice that this category dominates.

This graph shows the history of derivative works. The X-axis refers to the publishing date and the Y-axis shows cumulative number of plays. For example, a user can easily find “When was the most popular derivative work published?” and “How did the puopularity of different categories of derivative works change through time?”.

It visualizes social tags that were added to derivative works. The size of tags means the number of plays of the derivative works with these tags.
Currently, this function is only available for Nico Nico Douga.

Arrow Tag is a named directional link from one song to another song. It represents a relation between original songs in natural language. Songrium enables a user to annotate various relations between original songs using Arrow Tags.