Help me to figure out this band/song

About two months ago, I`ve watch the music video at Youtube, found by clicking random references. I remember finding the band and album on Wikipedia. It`s from 1975 (I don`t know if released od recorded), but some sources may say 1976. The band seemed to play rock/hard rock with orchestra (maybe for a few songs). I remember that on the stage there were members of some orchestra dressed in blue suits. Some parts were played by the band, then the orchestra took the main word, then the band again. I would be really happy if someone of you knew. Thanks.

Do you have a Youtube account?

There is a history button at Youtube.

Use the drop down menu of your Youtube screen name to find 'History'


Could it be Electric Light Orchestra or The Moody Blues?




Dan