Ziggy Played Guitar

He picked up the 'guitar' and dropped it.

"Dang it."

He picked it up again, but this time he used four hands instead of two. It kind of worked. Steadying himself in three legs, Ziggy tried to strum the instrument and fell over.  The guitar went flying across the floor and made a noise that hurt his ear canals. The sounds that travelled from earth were much better- probably in part because the creatures playing the instrument could hold them without falling over. He needed something to fix that. He couldn't change the instrument, because that would ruin it. It wouldn't be a humans guitar if he changed it. He wanted to play the guitar. Ziggy lifted himself up on all eight feet and hissed at the computer.

"I need to be human for this."

He couldn't waste the entire trip from Mars to get this thing without even being able to play it. He tapped a few feet as the computer worked on his problem. The guitar lay on the floor across the room. The time telling devices had been set to human units, and he estimated that it took the computer about three hours to come to it's conclusion. It beeped at him.

"Yes?"

It hissed a reply, and he waved his mandibles at the motion screens. He knew that to get the guitar his friend had to change himself- it was camouflage of a kind. He could probably pull it off, too. He just needed to copy the program and... done?

He felt strange. Taller than he was before, and the centre of his gravity had shifted. Only two feet- he fell over in the direction of his instrument. He lifted himself up on four limbs and sat down. Ziggy picked up the guitar.