TWO booming voices, two different takes on how to keep that voice box well oiled.

National Day Parade sergeant major, Master Warrant Officer Shamsuddin Isnin's booming voice could be heard as far away as the Benjamin Sheares bridge.

He was teamed up with the parade commander, Lieutenant Colonel Mark Teo, 38.

Together, they were the voice of the over 2,600-strong parade marching contingent.

For MWO Shamsuddin, 47, spicy food gave his voice that special kick.

His breakfast yesterday consisted of two prata kosong with fish curry, washed down with tea, he said with a grin.

'I'm used to spicy food, and it doesn't affect my voice. Spicy food, ice cream, everything I still whack,' he said.