Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a disappointment

There are some great moments of Sergio's virtuoso piano playing and jams with the band, but I really wanted to hear Lani Hall & Karen Phillip singing live. They are all over the place!! None of those perfect streamlined harmonies of the studio albums. It's like they were on different stages at different times. Now I have to beleive their television appearances back then were lip-synched. There is a Live At The Hollywood Bowl album with Brasil '77 & different singers that is much better.