::::: Per WP:REDLINKS, it's not clear-cut but the question is one of WP:GNG is fairly clear, are there reliable independent third-party sources about those artists. Signing onto a label is not sufficient, would it pass any of the criteria under WP:MUSICBIO? Can we at least go with criteria 2, those who had a hit single or album on the national chart (including genre charts)? If the band never really had that even, it's not likely to be worth listing.