Modifying an array of cells in a cell matrix for a step-sequencer

A system comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable storage mediums containing instructions to cause the one or more processors to perform operations including:
• receiving a first input corresponding to a selection of an array of cells within a cell matrix, the cell matrix including one or more arrays of cells,
• each cell within the cell matrix arranged in a sequential arrangement within its corresponding array of cells,
• each array of the cell matrix assigned to audio sample data stored in a computer-readable medium that, when triggered, causes the audio sample data to output corresponding audio, and
• each cell within its particular array of the cell matrix, in response to being selected for playback and upon being triggered to begin playback, causes the audio sample data corresponding to the cell's particular array to be played,
• receiving a second input corresponding to a changing of a number of cells within the particular selected array;
• and
• changing the number of cells within the selected array based on the second input.

A non-transitory computer-program product tangibly embodied in a machine-readable non-transitory storage medium including instructions to cause a processor to:

• receive a first input corresponding to a selection of an array of cells within a cell matrix, the cell matrix including one or more arrays of cells,
• each cell within the cell matrix arranged in a sequential arrangement within its corresponding array of cells,
• each array of the cell matrix assigned to audio sample data stored in a computer-readable medium that, when triggered, causes the audio sample data to output corresponding audio, and
• each cell within its particular array of the cell matrix, in response to being selected for playback and upon being triggered to begin playback, causes the audio sample data corresponding to the cell's particular array to be played,
• receive a second input corresponding to a changing of a number of cells within the particular selected array;
• and
• change the number of cells within the selected array based on the second input.