Note how Ligeti starts from a very low register, at a very quiet dynamic (pianissimo) and with staccato articulation (0:24). The pedal in the left hand forms gradually from a fragmented rhythm until it unfolds in a continuous stream of staccato eighth notes (0:42). Superimposed on this low A pedal is a rhythmic motif in the right hand (0:46). Ligeti shows here great mastery in rhythmic variation. This rhythmic fragment is created by accumulation and extension of a first cell which is elongated and then further fragmented in this fashion.
Think outside the box and let your songwriting generate a bit of extra side money! Here are some potential revenue sources you may not have thought of yet.