Petr Novak was a Czech pop/rock musician, born in Prague, known for his philosophical texts and a great sound for his era. His song "Povidej" was often high in the Czech charts. Eventually the rules for the charts were changed to prevent him remaining there for years.
Recently his song 'Knihovna' was used in a Prague-themed advert by Heineken.

Petr Novák on Last.fm.