my $maxtries = 10;
my $i = 1;
while ($i <= $maxtries) {
    $mech->follow_link(text => "Hey Jude (lennon/mccartney)", n => "1");
    last if $mech->success;
    $mech->back();
    $i++;
}

$mech->success() or die "Can't find song page\n";