had a much greater role on "Heroes" than he had for Low, being credited as co-author on four of the ten songs, leading Seabrook to call it the "truer" collaboration. Eno himself stated "We both worked on all the pieces all the time." Eno would act as "assistant director" to Bowie, giving feedback to the musicians and suggesting new – and unusual – ways to approach the tracks. One of these ways was the employment of Eno's Oblique Strategies cards. According to Chris O'Leary, these cards were "part-fortune cookie, part-Monopoly 'Chance' cards", intended to spark creative ideas. Although these cards were used greatly throughout the Lodger sessions, Eno and Bowie only used them on "Heroes" when creating the instrumentals, including on "V-2 Schneider", "Sense of Doubt" and "Moss Garden". Following the initial sessions in July, recording for "Heroes" became more sporadic, with overdubs, vocals and mixing lasting until August. Like its predecessor, lyrics weren't written or recorded until all but Bowie and Visconti departed. Seabrook characterises this stage of recording as "sporadic bursts of inspiration surrounded by longer stretches of contemplation." When making The Idiot and Lust for Life with Iggy Pop, Bowie became fascinated with Pop's ability to improvise lyrics while standing at the microphone. For "Heroes", he decided to use the same method. Visconti later attested: "He'd never have a clue what he'd sing about until he actually walked in front of the microphone." Bowie usually completed his vocals in only one or two takes; Visconti provided backing vocals in the same fashion. The final mixes were done at Mountain Studios in Montreux, Switzerland, a studio that would become one of Bowie's mainstays. An engineer at Mountain, David Richards, would also become one of his regulars. Richards' assistant was Eugene Chaplin, the son of silent film star Charlie Chaplin. Music and lyrics As the second release of the Berlin Trilogy, the music on "Heroes" expands on the material found on its predecessor Low. The songs have been described by Consequence of Sound as art rock and experimental rock, while also further continuing Bowie's work in the electronic and ambient genres. Like its predecessor, the songs on "Heroes" emphasise tone and atmosphere rather than guitar-based rock. However, they are more positive in both tone and atmosphere than the songs of its predecessor; author James Perone considers it more accessible, while Visconti described it as "a very positive version of