For a pianist, does a lefthander has any advantage or disadvantage over righthander?

How can i explain/convince the parent its okie if the child is left handed...

I don't think it makes any difference at all.
It is a new skill that is being learned and the newness overides any difference this may make.
I am left handed and play (and teach) piano.
I also have a left handed student.
When I play I am the same as a right hander.... my right hand is the dominant hand on the piano. My left hande student is the same.

im left handed and play piano. it doesnt cause me any problems at all

I'm left handed too. This is quite interesting as a lot of musicians are left handed.

Albarn, Damon UK Singer with Blur 23-Mar-1968
Allman, Greg Musician
Ark, Brad Vander Musician
Armstrong, Tim Singer/Guitarist
Bach, Carl Philipp Emanuel German Composer 08-Mar-1714
Bentyne, Cheryl USA (WA) Singer with Manhatten Transfer 17-Jan-1954
Bowie, David UK Singer 8-Jan-1947
Britten, Benjamin UK Composer 22-Nov-1913
Byrne, David Scottish Talking Heads 14-May-1952
Campbell, Ali UK Singer with UB 40 15-Feb-1959
Campbell, Glen USA Singer 22-Apr-1936
Campbell, Robin UK Singer with UB 40 25-Dec-1954
Carr, Vikki USA Singer 19-Jul-1941
Caruso, Enrico Italian Tenor 27-Feb-1873
Casals, Pablo Spain Cellist 29-Dec-1876
Castle, Jeremy USA Country music singer, songwriter, Oklahoma 2-Aug-1974
Cobain, Kurt (Decd.) USA- LA Lead singer of Nirvana 20-Feb-1967
Cockburn, Bruce Canadian Signer Song Writer 27-May-1945
Cokes, Ray UK (IOW) Video Jocky 24-Feb-1948
Cole, Natalie USA- LA Singer 6-Feb-1950
Collins, Phil UK Musician/Actor 30-Jan-1951
Collins, Dorothy Canadian Singer 18-Nov-1926
Copeland, Stewart USA Composer 16-Jul-1952
Corgan, Billy USA (IL) Singer - "Smashing Pumpkins" 17-Mar-1967
Cyrus, Billy Ray USA (KY) Musician - sang "Achy breaky heart" 25-Aug-1961
Dale, #### USA (Mass) Guitarist - "King of the Surf" 1937
Dion, Celine Canadian Singer 30-Mar-1968
Dylan, Bob USA (Min) Musician 24-May-1941
Easton, Elliott Musician
Everly, Phil USA Chicago The Everly Brothers 19-Jan-1939
Everly, Don USA Chicago The Everly Brothers 1-Feb-1937
Fleck, Bela Jazz Musician
Foster, David Canadian Musician, Producer,Composor
Frey, Glenn USA (Detroit) The Eagles 6-Nov-1948
Gales, Eric Guitarist
Gallagher, Noel UK Oasis singer/writer 29-May-1967
Garner, Errol (Dec'd) USA (Pittsberg) Jazz Pianist 15-Jun-1921
Gayle, Crystal USA (KY) Singer 9-Jan-1951
Geldof, Bob Singer 5-Oct-1954
Gibb, Barry UK (IOM) Bee Gees 1-Sep-1946
Gould, Glenn Pianist
Griffin, Kevin Guitarist & Lead Singer
Hanson, Zac USA Musician 22-Oct-1985
Hauser, Tim Singer with Manhatton Transfer 12-Dec-1941
Hayes, Isaac USA (TN) Musician "blues" 20-Aug-1942
Hedley, Thomas Vocalist/Musician
Hendrix, Jimi (Dec'd) USA (Seattle) Musician/Guitarist 27-Nov-1942
Hill, Lauryn USA (NJ) Singer 25-May-1975
Howdy, Boy Singer
Iommi, Tony England Black Sabbat 19-Feb-1948
King, Albert (Decd) USA (Miss) Musician 25-Apr-1923
King, Mark Guitarist
Knopfler, Mark Gutarist with Dire Straits
Koenig, Walter USA Actor - Chekov in Star Trek 14-Sep-1936
Leitch, Donovan Musician
Lennox, Annie Scotland Singer 25-Dec-1954
Lydon, John John Lyndon - Johnny Rotten of the Sex Pistols
Manchester, Melissa USA (NY) Singer 15-Feb-1951
Mangione, Chuck USA Trumpet 29-Nov-1940
Marsalis, Wynton Musician
Martin, Ricky Puerto Rico Singer 24-Dec-1971
Mathers, Marshall USA Singer - Eminem
McBride, Martina USA Country Singer 29-Jul-1966
McCartney, Sir Paul UK The Beatles 18-Jun-1942
McKay, Al Guitarist/Writer
Melonson, Christie Marie Opera
Michael, George UK Wham -Singer/Songwriter 25-Jun-1963
Moore, Gary Northern Irish Guitarist with Thin Lizzie, Colosseum II, Skid Row 04-Apr-1942
Morris, Colonel Robert USA Songwriter, musician, country music
Mozart, Wolfgang Amedeus Composer
Nero, Peter USA Composer/Actor 22-May
Oliva, Jon Musician
Pace, Ian Drummer
Paganini, Niccolo Violinist
Paul, Alan USA (NJ) Singer with Manhatten Transfer 23-Nov-1949
Perry, Joe Singer with Aerosmith
Plant, Robert England Musician - Led Zepplin 20-Aug-1948
Porter, Cole (Dec'd) USA (IN) Musician Composer 09-Jun-1892
Prokofiev, Serge Composer
Rachmaninoff, Sergei Russian Composer 01-Apr-1873 ( Nat...here he is! )
Ravel, Maurice (Dec'd) French Composer 07-Mar-1875
Rawls, Lou USA Musician 01-Dec-1936
Rush, Otis Musician
Schumann, Robert Composer
Seal, England Singer 19-Feb-1963
Seed, Christopher UK Pianist
Siegel, Janis USA (NY) Singer with Manhatten Transfer 23-July-1952
Simon, Carly USA Singer 25-Jun-1945
Simon, Paul Simon & Garfunkel 13-Oct-1941
Stardust, Ziggy UK Alter Ego of Bowie
Starr, Ringo Drummer with the Beatles 07-Jul-1940
Sting, Singer 02-Oct-1951
Stipe, Michael USA Lead singer with R.E.M. 04-Jan-1960
Szabo, Rich Trumpeter
Taylor, Roger UK Drummer, Guitarist and Singer 26-Jul-1949
Taylor, Roger Musician
Tim, Tiny (Dcd) USA Singer 12-Apr-1930
Transfer, The Manhatten USA All 4 are left-handed - see individual entries various
Van Beethoven, Ludwig German Composer 16-Dec-1770
White, Lenny Drummer
Williams, Paul USA Song-writer 19-Sep-1940
Womack, Bobby Musician
Yrjana, Aki W Musician

Are they just looking for a way out of having to find the money for lessons?

AFAIK, the left hand side of the body is controlled by the right hand side of the brain and vice versa. The right hand side of the brain is *supposed* to be the more creative half. So if the left side of your body - therefore the right side of your brain - is dominant, then theoretically you should have a distinct avantage musically.

Interesting! Viohazard started on violin rather than piano at age 4 because I couldn't persuade him to use his RH for playing melody. He either refused to play the harmony at all and played with his left hand in the treble clef, or simply switched the harmony and melody and played melody in bass clef, harmony in treble. When I tried to insist, he just crossed his hands .

At that point, I decided he was way too young to reason with, and started considering alternative instruments:huh: .