A method includes displaying a graphical user interface (GUI) for a step sequencer in a digital audio workstation. The GUI includes a sequence of user interface elements corresponding to a portion of a roll for an audio composition. Each user interface element in the sequence of user interface elements represents a respective time interval for a note. The sequence of user interface elements. The method includes receiving a user input interacting with a first user interface element. The method includes, in response to the user input: splitting a played note represented by the first user interface element into two or more played notes. The method further includes providing the audio composition for playback by a speaker.