Having amassed a larger fanbase this time around with "A" and "Mach", the Rainbow girls are all set to wrap up their second single promotions at the '2010 Love Sharing Concert'. The girls have undoubtedly improved by leaps and bounds since their debut "Gossip Girls" days. Check out their double-hit goodbye stage for "A" and "Mach" below! Technically, it's Inkigayo, as "2010 Love Sharing Concert" is just taking its place this week.