Когда включили радио , концерт шел

Когда включили радио , концерт шел уже примерно полчаса

Результаты (английский) 1:

When incorporated radio, concert was about half an hour

Результаты (английский) 2:

When turned on the radio, the concert was already about half an hour

Результаты (английский) 3:

When have included radio , the concert was already approximately half an hour