Unique to Heart Strings is the use of 'fixed-do' solfège.
The 'fixed do' solfège system dates back to the 11th century and is used today in countries such as Japan, China, France, Italy, Belgium, Spain, Portugal, Greece, Macedonia, Israel, Russia, Latvia, Romania, Latvia, Quebec, Latin America, Lebanon, Turkey and Israel.
In fixed-do training, a pitch always has the same solfège name. Fixed do training reinforces an association between a tone's pitch and its name, thus providing an advantage in the acquisition of absolute pitch.
Extensive use of the 'fixed do' system at Heart Strings is leading to the acquisition of absolute pitch in a number of Heart Strings students.