"Come on Chile, come on Chile, we are going to the World Cup. With caipirinha and piscola we are going to celebrate," says the song, released this week.
A caipirinha is a classic Brazilian cocktail, while the piscola combination of local grape spirit pisco and cola is a Chilean favorite.
Nightclub owner Pinera, who has said he went to the Woodstock music festival in the 1960s, is well-known in his home country for a rather different lifestyle to his brother.
Sebastian Pinera is a billionaire businessman who was President of Chile from 2010, stepping down in March as Michelle Bachelet took over. He achieved brief international fame in 2010 when 33 Chilean miners were rescued after weeks underground following a mining accident.
The World Cup finals kick off on June 12 and Chile is in Group B with defending champions Spain, the Netherlands, and Australia.
(Reporting by Rosalba O'Brien; Editing by Grant McCool)