A CLIFF-TOP piano concert, a 15ft inflatable RedBall and a self-propelled underwater wheelchair will be wowing residents and visitors on Portland.

Island attractions during the London 2012 Games will also include an open air installation of 300 musical instruments, theatrical performances and a Tibetan monk ‘sand mandala’ to effect purification and healing.

The cultural events, as part of Maritime Mix – London 2012 Cultural Olympiad by the Sea, will begin on May 18 and 19, with The Chalk Legends music and dance concert at the Weymouth and Portland National Sailing Academy.

The giant inflatable RedBall will visit the island from June 21 to 24, popping up amid various local architecture.

Crowds will also flock to Portland for day two of the Battle for the Winds performance on July 27 in the underground tunnels of High Angle Battery – a multi– media installation of dance, visual arts and locally captured sounds.

From August 29 to September 1, artist Sue Austin will be ‘Creating the Spectacle’ at Osprey Leisure Centre in her self-propelled underwater wheelchair.

The Castletown swimming pool will be transformed into a sub-aquatic theatre for underwater and poolside audiences.

From August 31 to September 9, Wide Street on Portland will be transformed into Inside Out Dorset’s Harmonic Fields – an ensemble of 300 instruments, played by the wind.

The b-side contemporary art festival will return to the borough from August 29 to September 9 with an innovative work sited in pubs, churches, alleyways, swimming pools, shops, cafes, car parks, bridges, bus stops and old castles.

The innovative ICCI 360 arena on Weymouth Pavilion forecourt will also feature a series of Portland projects including Creating a Spectacle, Chinese artist Lu Zheng’s poetic exhibit of ‘waiting stones’ at the Chesil Community Garden, Steven McPherson’s human-powered sound symphony and Kid Carpet’s ‘Language Lab’ comedy lecture.

The Portland Sculpture and Quarry Trust Drill Hall will host a programme of music, drama and dance, exhibitions, stone carving festivals and artists’ residencies from now until September 9.

Richard Crowe, creative programmer of Maritime Mix London 2012 Cultural Olympiad by the Sea, said: “None of this extensive and ambitious programme would have been possible without the commitment of the artists and producers involved, the communities they have worked with and the huge support of the Arts Council England, the county council and the borough council.”