Bad Apple but it's Sirens.

Out of tune? Out of sync? That's this video! (Well, it's my first attempt afterall.) CREDITS: Bad Apple:    • 【東方】Bad Apple!! ＰＶ【影絵】   Federal Signal STH-10:    • Federal Signal STH-10 Siren Test, Alert, B...   Sentry 3V8-H:    • Sentry 3V8-H-B | Alert | Taswell, IN (Craw...   Federal Signal Modulator:    • FS Modulator 6024 Siren Test, Chicago, IL ...   Whelen Hornet:    • Whelen Hornet | Alert | Wadesville, IN (Po...   ACA P50:    • ACA P-50 Siren Test - Alert Ambience & Att...   Federal Signal 2001-DC:    • FS 2001-DC Nuclear Siren Test, Alert - Cha...