"ワン☆オケ！vol.01" (Wan☆Oke! vol.01) is Wonderful☆Opportunity's first only-karaoke album. It is an album consisting of 9 off vocal original Vocaloid works, with no vocals included. It consist some notable works including Minus-P's Virus Resistance Series, "Romance Touch", and "MIDI MASTER!!".
It's available for purchase in TAP shop. Unlike it's sequel, WanOke vol.01 isn't available for international shipping.