Editing of midi files

A system for editing an audio file, the audio file comprising information about a time stream having a plurality of tones extending over time in said time stream, the system comprising:

• one or more processors;
• and
• memory storing one or more programs, the one or more programs including instructions, which, when executed by the one or more processors, cause the one or more processors to perform a set of operations, including:
• cutting the time stream at a first time point of the time stream, producing a first cut having a plurality of first cutting ends, including a first left cutting end and a first right cutting end;
• allocating a respective memory cell of a plurality of memory cells to each of the first cutting ends;
• in each of the plurality of memory cells, storing information about those of the plurality of tones which extend to the corresponding first cutting end to which the memory cell is allocated;
• and
• for each of at least one of the first cutting ends, concatenating the cutting end with a further cutting end which has an allocated memory cell with information stored therein about those tones which extend to said further cutting end;
• wherein the concatenating comprises using the information stored in the memory cells of the first cutting end and the further cutting end for adjusting any of the tones extending to the first cutting end and the further cutting end.

A non-transitory computer-readable storage medium storing one or more programs for editing an audio file, the audio file comprising information about a time stream having a plurality of tones extending over time in said time stream, wherein the one or more programs include instructions, which, when executed by a system with one or more processors, cause the system to perform a set of operations, including:

• cutting the time stream at a first time point of the time stream, producing a first cut having a plurality of first cutting ends, including a first left cutting end and a first right cutting end;
• allocating a respective memory cell of a plurality of memory cells to each of the first cutting ends;
• in each of the plurality of memory cells, storing information about those of the plurality of tones which extend to the corresponding first cutting end to which the memory cell is allocated;
• and
• for each of at least one of the first cutting ends, concatenating the cutting end with a further cutting end which has an allocated memory cell with information stored therein about those tones which extend to said further cutting end;
• wherein the concatenating comprises using the information stored in the memory cells of the first cutting end and the further cutting end for adjusting any of the tones extending to the first cutting end and the further cutting end.