Octatonic & Whole Tone

1) Claude Debussy, "Voiles," mm. 1– 4, from Préludes (1909) [Image | YouTube: 0:00–0:14]

2) Stevie Wonder, “You are the Sunshine of My Life,” intro, from Talking Book (1973) [Image | YouTube: 0:00–0:15] * See just mm. 3–4

3) Thelonious Monk, “Four in One,” mm. 1–8 [PDF | Image | MuseScore | YouTube: 0:00–0:13]

1) Alan Silvestri, “Billy,” from the film Predator (1987) [Image | YouTube: 0:18–0:47]

2) Alexander Scriabin, Vers la Flamme (Toward the Flame), Op. 72, mm. 1–6 [Image | YouTube: 0:00–0:25]

Note: There's one pitch that doesn't fit into the collection. Which pitch is it?