With 2 days left until the United Cube Concert, Cube Entertainment told allkpop that 3 special family guests will be attending. Cube told us, "This coming 14th at the Jamsil Olympic Stadium, United Cube Concert will take place and our 3 special family guests, A Pink, Huh Gak and Mario will also perform on stage." All of the A Cube artists, in addition to Cube Entertainment's 4minute, B2ST and G.NA coming together on the same stage, is sure to excite fans. A Pink stated, "It is our first time to perform as guests at a concert since our debut. Prior to our debut, we received so much help from our senior family members, and to be invited to our seniors' concert is so meaningful. We are extremely happy." The United Cube Concert is certainly coming together very well, stay tuned to allkpop for more details!