frontman
US /ˈfrʌnt.mæn/
UK /ˈfrʌnt.mæn/

1.
the lead singer of a band
:
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The band's frontman captivated the audience with his powerful vocals.
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He's not just a frontman; he also writes most of their songs.
2.
a person who represents an organization or group, often to conceal the true activities or leaders
:
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He was just a frontman for the illegal operation.
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The CEO was merely a frontman, with the real power held by the board.