Sometimes, after a very long time without tuning, a piano will fall so far out of tune that it will need a pitch correction. This involves (most often) adding additional tension to the strings and allowing the instrument to relax and settle at the new pitch. This requires one to two extra tunings with a follow up tuning three to six months afterwards to insure stability in the instrument. This service is in addition to a standard tuning.
Sometimes, after a very long time without tuning, a piano will fall so far out of tune that it will need a pitch correction. This involves (most often) adding additional tension to the strings and allowing the instrument to relax and settle at the new pitch. This requires one to two extra tunings with a follow up tuning three to six months afterwards to insure stability in the instrument. This service is in addition to a standard tuning.