All that can presently (January 2016) be gleaned about by internet searching is that Carlos Roberto is the one-off composer of La Bella Argentina (1912) published by Carl Fischer Music Publisher, New York, USA.
Surfers are welcome to contribute information about this composer.
La Bella Argentina Tango (1912)
This list is arranged in chronological order and contains 1 work by Carlos Roberto.
It does not claim to be complete and represents only the number of items located. Keys:ER