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.
His yodeling obsession was accompanied by a love of obscure stringed instruments like the zither and hammered dulcimer, both of which he taught himself as a child. In his teens, Ischi taught himself to yodel by listening to Franzl Lang records and imitating what he heard. In case you aren’t familiar, Lang is one of yodeling’s most revered figures and is widely known as the “Yodel King.”