A method for dynamic modification of an audio content theme, the audio content theme comprising audio information relating to at least one combination of music instruments, the method comprising the steps of: receiving an intensity parameter indicative of a plurality of instruments being played at the same time and a variation parameter indicative of a combination of music instruments being played; and modifying, based on a modification of said intensity parameter, the plurality of instruments being played at the same time by changing which of the at least one audio file being played, and, based on a modification of said variation parameter, the combination of music instruments being played, wherein the audio content theme comprises audio information relating to a first plurality of audio files comprising of instruments being played at the same time, wherein the audio content theme further comprises audio information relating to a second plurality of audio files comprising of a combination of instruments being played, the audio files are constructed and composed in such a way that the lowest intensity level only consists of very little musical information and audio files on the next intensity level comprises what is in the first level and added audio material, wherein crossfading between the intensity audio files is used to create a seamless transition over time, wherein modifying the plurality of instruments being played comprises changing which audio file of the first plurality of audio files that is being played, and wherein modifying the combination of music instruments being played comprises changing which audio file of the second plurality of audio files that is being played. receiving an intensity parameter indicative of a plurality of instruments being played at the same time and a variation parameter indicative of a combination of music instruments being played; and modifying, based on a modification of said intensity parameter, the plurality of instruments being played at the same time by changing which of the at least one audio file being played, and, based on a modification of said variation parameter, the combination of music instruments being played, wherein the audio content theme comprises audio information relating to a first plurality of audio files comprising of instruments being played at the same time, wherein the audio content theme further comprises audio information relating to a second plurality of audio files comprising of a combination of instruments being played, the audio files are constructed and composed in such a way that the lowest intensity level only consists of very little musical information and audio files on the next intensity level comprises what is in the first level and added audio material, wherein crossfading between the intensity audio files is used to create a seamless transition over time, wherein modifying the plurality of instruments being played comprises changing which audio file of the first plurality of audio files that is being played, and wherein modifying the combination of music instruments being played comprises changing which audio file of the second plurality of audio files that is being played.