Yes. Two or more people can own a copyright in a work. If they each contribute creative content to what is intended to be a unitary whole, then they are each co-owners of the copyright in the entire work. On the other hand, if a person creates a work without the intention of making it part of a work that is being co-created with another person, then the person is the sole owner of the copyright in that work. For example, if a poet writes a poem, and a composer independently comes up with the melody for a song, then the poet owns a copyright in the lyrics and the composer owns the copyright in the melody.