Alstom Metropolis C751A motor run sound

To the original video:    • SBS Transit C751A [7037/7038]: Dhoby Ghaut...   To the original photo: http://www.sgtrains.com/train-c751a.html C751A Traction Control: IGBT-VVVF (Alstom ONIX) Serving for SBST North East Line Operator: SBS Transit Builder: Alstom Transport Train Length: 138.5m (6 cars) Track Gauge: Standard gauge (1435mm) Started Service From 20 June 2003 Fully Automatic