  This work investigates the use of a fiber piano in controlling spatial modes
in few mode fibers. It has been found that together with sub-optimal coupling
into SMF-28 fibre and half and quarter waveplates, the fiber piano is capable
of producing and reproducing desired spatial modes up to $LP_{11}$ when using
808 nm light and up to $LP_{21}$ when using 632.8 nm light. The control of
spatial mode profile extends down to the single photon level. This is
demonstrated with the help of correlated photon pairs generated via spontaneous
parametric down conversion.
