Sophia Thanks MRC! Very interesting! I guess with piano, being right handed is for the win, mostly
That's not what the studies found. Right away in the title it states "No disadvantage for left-handed musicians". To go into a bit more detail:
In the first study, 23 pianists (11 righties and 12 lefties) and 24 string players (10 righties and 14 lefties) were given a questionnaire where they were asked if they found that their handedness had an effect (positive or negative) on hand problems, general bodily comfort, playing position, expressive skills and sensorimotor skills. There was no significant difference between the lefties and the righties.
In the second study, 19 pianists (10 righties and 9 lefties) had to play scales at a set speed, with each hand separately, as evenly as possible. Once more, there was no significant difference between lefties and righties, and all pianists performed more evenly with the right hand.
This must be due to the bias towards the right hand in our repertoire: we all (whether left- or right-handed) play scales better with the right hand because we've had to practice so much more passagework with the right hand than with the left.
Nightowl Considering that left handed people form a minority of the world's population, we can assume that most composers are/were right handed so it's hardly surprising that many piano pieces involve the RH doing the lion's share of the work.
The reason the right-hand parts are usually more complex than the left-hand ones has nothing to do with right-handedness and everything to do with the style of music we play. In the classical/romantic tradition, the melody is most often on top and the accompaniment on the bottom. This doesn't just apply to piano music: in an orchestra, it's usually the violins who will be playing all the interesting and difficult stuff (melodies, fast passagework), while the basses play the accompaniment.
Left-handed composers and pianists include Rachmaninoff, Mozart (probably, or he may have been ambidextrous), C.P.E. Bach, Barenboim, Lupu, Grimaud, Fleischer, Gould, Horowitz...