  This contributory article begins with our fond and sincere reminiscences
about our beloved Prof. A.P. Balachandran. In the main part, we discuss our
recent formulation of quantum mechanics on (1+1)D noncommutative space-time
using Hilbert-Schmidt operators. As an application, we demonstrate how
geometrical phase in a system of time-dependent forced harmonic oscillator
living in the Moyal space-time can emerge.
