The greatest album by ELO. The mood was classical meets psychedelic, by way of hard rock.
Although the band would change and get even more success in subsequent years, this was a watershed moment for the band.
Almost a rock opera, but not quite. Ironically it sounds more like an opera than many attempts by pop/rock bands to create one.
Listen to the album with headphones on, and be transported over the rainbow to Eldorado...Eldorado...Eldorado...