Lloyd Webber also employs various techniques to help connect the pieces. Namely, the score relies heavily on recurring motifs as well as the use of preludes and reprises. For instance, melodic fragments of "Memory" are sung by Grizabella and Jemima at several points in the show before the song is sung in full, serving to characterise Grizabella and foreshadow her final number. Similarly, Lloyd Webber introduces a fugue in the overture, and variations of this theme are then repeated throughout the musical until it is finally resolved as Grizabella ascends to the Heaviside Layer.