Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An absolutely perfect voice

If only she had been blessed with hit-producers, undoubtedly Betty Johnson would have remained on the charts for years, instead of the nine records that made BILLBOARD'S Top 100 between 1956 and 1959.An absolutely perfect pitch and refreshing sound of purity. Every would-be singer should study these vocals.This Voume 2 contains a great many "standards" and it is wonderful listening. What a talent!Respectfully,/s/ SH