jcadencii software package provides Piano roll editor for singing synthesis, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install jcadencii
jcadencii is installed in your system.
Make ensure the jcadencii package were installed using the commands given below,
$ sudo dpkg-query -l | grep jcadencii *
You will get with jcadencii package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Sound |
| Package | jcadencii |
| Version | 3.3.9+svn20110818.r1732-4 |
| Description | Piano roll editor for singing synthesis |
| Sub Section | Sound |