From The Sky (1)

DO NOT USE. Invalid artist using the suffix (1) [g2.4.1]: Different Artists with the same name (for example, two artists named "John B") should be entered as "John B" and "John B (2)". The (2) is not part of the name but is used to distinguish the two artists. If you need to create a third, use (3) and so on. (0) and (1) are never used.