OK, hear me out: Hugh McDonald. The 'Jovi may not withstand much credible muso scrutiny (though please, God save us from credibility), but his bass is deceptively important in driving some undeniably classic pop-rock belters. Where would "In These Arms" be without it? Or, indeed, Livin' on a Prayer, etc.? Alec John Such - sorry pal, you're fooling nobody. Those are Hugh tunes. Massive pop hits, with a bass part that perfectly fuses rhythm and harmony but isn't necessarily noticed by anyone who's not of a four-hefty-strings persuasion themself, but that makes those who know doff their caps.