The protesters sang the national anthem and shouted 'we want elections'.
The star conductor's comments came after an 18-year-old musician was killed at a rally in Caracas.
Footage follows rumours that Lopez had been poisoned and taken to military hospital.
The Latin American nation is in a severe economic and political crisis as anti-government protests continue.
Shocking photos of demonstrator engulfed in flames during violent anti-Maduro protests in Caracas, Venezuela
Venezuelan security forces battled protesters who lit fires and hurled stones and petrol bombs in Caracas.
Capriles said an early election is the only solution to end the crisis in the country.
Juan Pablo Pernalete Llover died after receiving the impact of a tear gas canister in his chest.
Improvised gas masks and Molotov cocktails deployed in protests against Venezuela's President Maduro
As state security forces lean more heavily on tear gas, protesters have begun gearing up with goggles, gas masks and vinegar-soaked rags.
Three people were killed during the demonstrations, as hundreds of thousands of protesters stormed the streets of Caracas and other Venezuelan cities to denounce President Nicholas Maduro.
Thousands take to the streets in protests against government of President Nicolas Maduro.
President Nicolas Maduro faces mounting pressure as approval ratings drop below 20%.
Demonstrators carried makeshift shields and wore improvised gas masks to protect themselves against the plumes of tear gas.
Dozens of protesters were reportedly injured in police crackdown during the demostrations in capital Caracas.
The national comptroller ruling said the ban was due to 'administrative irregularities' in his role as governor.
Jose Bayardi said if the OAS suspends Venezuela's membership, the whole region will be destabilised.
Clashes broke out after authorities cordoned off a square where opponents had planned their latest protest against the autocratic government.
The top court annulled the opposition-dominated National Assembly and later reversed its ruling.
The country's Medical Federation said that the hospitals had less than 5% of the drugs they needed.
The six children are aged between six and 15 years old and are accused of stabbing two soldiers to death.
Desperate people with dreams of getting rich find they are little more than slaves in a lawless underworld.
The spat deepened after Venezuela called Peru's president a coward and a dog, submissive to the US.
The message comes days after the US Treasury imposed sanctions of Venezuelan Vice President Tarek El Aissami.
El Aissami is accused of aiding drug trafficking through Venezuela.
Venezuela's embassy in Baghdad accused of serious irregularities.
Venezuelans say that they cannot return to Nicolas Maduro's police state.
President defends his move and says he is executing 'constitutional duties day after day'.
Deaths by lynching have increase six times in the past year as the country struggles with widespread crime and hunger.
The development follows President Maduro's drive to fight what he calls criminals hoarding 100-bolivar banknotes.
Venezuela was suspended from the Mercosur trade bloc this month due to its poor human rights record.
They were arrested on several accusations of instigating violence and plotting against the socialist government.