I needed to lift an upright reproducing piano (heavy) onto a dolly and
did not have any help.  I found a faster and safer method than the old
lever and block routine, and it's pneumatic to boot.

I used one of the air bag type car jacks, that is supposed to work from
car exhaust.  No, I didn't connect it to the pump.  I used an air
compressor on low pressure and it worked real well.  You could probably
use your car if it was handy.  Just lift one side at a time and make sure
the bag is under the center of mass.