Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not really jazz

This was the first time I heard Johanna Grüssner. Nice voice and talented, but while she sings jazz standards (and some pop) she is not really a jazz singer in terms of improvisation and individual expression, even when just singing the head the second time around - it's the same material. Little originality - It's more like a cover or wedding singer. If you want more jazz go for people like Jane Monheit or the masters like Sarah Vaughan, Ella Fitzgerald, Carmen McRae, Nancy Wilson, Jimmy Scott, Shirley Horn, Billie Holiday . . .