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Who would have thought Edinburgh's Tramworks would provide not just artistic - but musical inspiration.

The Milestone carve at Edinburgh College of Art - which involved 10 international artists carving 20 tonnes of different kinds of stone is drawing to a close.

Among the works, one by Japanese artist Atsuo Okamoto who unearthed his basalt glacial erratic boulder from excavations at the new tram terminus on the outskirts of Edinburgh.

For the past few weeks, he's been using a drill taller than himself to hollow out the boulder and in the process created a brand new musical instrument.

He demonstrates a trumpet sound using a long metal pole inserted into one of the gaps, but mostly he says, people have been using it as a drum.

"It's so busy here during the day, so noisy, but at night time, when it's a little quieter, people have been coming along, having a drink and then drumming. We have drumming workshops."

Gerard Mas from Spain set himself the challenge of transforming his Dorset limestone into a sheep, sculpting instead of shearing.

"It was not as easy as I thought," he admits," which is why I've decided to keep some woolly sheep and some sheared sheep."

For the record, even in stone rather than wool, the sheep's skin looks surprisingly lifelike.

The sculptures will remain outside the college building for just another day or two - except Hayashi Takeshi's work which is inside the main building.

There, visitors are encouraged to take off their shoes and walk barefoot across the stone carpet so they can feel the different textures.

The shape - he tells me - is the size of a traditional Japanese carpet, particularly those associated with tea ceremonies but the sandstone is as Scottish as it comes, from Corsehill in Dumfriesshire.

The works will now be transferred to Yorkshire Sculpture Park for a major exhibition which begins later this year.

After that, they'll transfer to the Pier Arts Centre in Orkney before ending up at Goodwood.