Type: Roundwound Material: 24K Gold Plated Gauges: 009/011/016/024/032/042 How would his hits have sounded, if Brian May would have used conventional strings? He did, however, choose the SOUND OF GOLD and Optima can be proud that these strings have made a small contribution to Brian’s great success and still do. The Brian May Signature is a Brian-tuned set of strings which was developed with and for Brian May. A highlight in string manufacturing.