Black Sabbath always seemed like one of those bands that was overrated. Three songs in, I'm starting to get it. Changes is a great song, love this version, love the Charles Bradley version, just a great song. You can hear the similarities between Black Sabbath and Led Zeppelin...two sides of the same 70s coin, one more blues rock, one more heavy metal. This album is great, Ozzy Osborne is a more intelligible singer than he is a speaker. Maybe Black Sabbath is underrated? I haven't been familiar with a single song yet but this rocks. Maybe it's just their hits I don't love. There are a lot of metal bands that owe a huge debt of gratitude to Black Sabbath. Another plus, varying song lengths, but an average of about four and a half minutes. 10 songs, 42 minutes, that's right in the zone in terms of number of songs and average song length. There are a couple of songs that I'm not sure how they fit in, good songs, but just seem a little out of place on this album.