It depends on the quality of the recorded music, i.e. how many bits per second were used to record it. At CD quality, 192 thousand bits per second (192kbps), you can store (8Gbits/192k x 60) = 694 minutes (remember, 1Gbyte = 8Gbits). Decreasing the recording quality to 128kb, will bump that figure up to 1040mins, speech quality (64kbps) will double that.
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