Bacall to Arms Foray voices Lauren Bacall. The title refers both to Hemingway's "A Farewell to Arms" and actress Lauren Bacall, whose acclaimed film debut was in "To Have and Have Not", based on another Hemingway novel, as well as a play on the term "A Call to Arms". Bob Clampett started his directing career with black-and-white animated shorts for the Looney Tunes series, this phase of his career lasting from 1937 to 1941. In 1941, fellow director Tex Avery departed the Warner Bros. Cartoons studio. Clampett replaced Avery as the head of a unit producing films for the Merrie Melodies series, while
What Love Is Made Of three minutes and fifty-five seconds (3:55), "What Love Is Made Of" is an uptempo dance and house track that has been described as "rave-y" and "trance-y". Its instrumentation contains the sounds of pianos and synthesizers. Jordan Sargent of "Spin" observed that it continued the musical style first introduced in Katy's 2012 extended play (EP), "Danger EP", which was "straight-forward house". Idolator's Sam Lansky compared her performance in the song to recording artist Siobhán Donaghy. Critical response to "What Love Is Made Of" was generally positive: most critics noted Katy's vocal performance and commended its sound. Siân Rowe from "NME" was