It would be very usefull to have a function that can be used to align the time-values of events to a grid. The grid could either be equidistant (piano-roll-style) or could be a complex musical structure itself. This would allow for a "convolution" of events, combining the pitch, etc. values of one group of events with the time values of another group. It would also be usefull to make events with arbitrary time values displayable in musical notation.