*EDIT* This suggestion is no longer possible, as Bandlab the owners of Cakewalk have removed the TTS-1 from all current and future versions of Cakewalk. BIAB will continue to work with the TTS-1 if it was previously installed though.
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Here’s a no-brainer ....install Cakewalk and the TTS-1 64 bit synth (free)
With the release of the 64 bit version of Band-in-a-Box, you now have access to all the 64 bit synths and plugins out there.
And many of them are available for free.
For example, there is a great MIDI GM synth available, the Roland TTS-1.
This is available free from Cakewalk by BandLab. You install the free version of Cakewalk, and this installs the TTS-1, which is then available to any program that supports 64bit DXi, like Band-in-a-Box 64. After you’ve installed Cakewalk, inside Band-in-a-Box 64 bit, choose the TTS-1 from the list of available synths (accessed by pressing the DXi/VST button inside the main menu- options - midi driver dialog).
There are 3 benefits to installing and using the TTS-1 and Cakewalk.
1. Great sound with Band-in-a-Box - likely better than any MIDI sound you’ve heard before with Band-in-a-Box. The TTS-1 is from Roland and has great sounds, and based on the famous Sound Canvas sounds. That means the sounds are balanced to sound great with existing MIDI styles in Band-in-a-Box, because we’ve always made our styles using the Roland Sound Canvas.
2. Better CPU Performance. The TTS-1 has lower overhead than many synths. It is especially useful if you have lots of programs and processes running, because it doesn’t use much CPU.
3. Cakewalk is a fabulous DAW, considered by many to be the best DAW available. Getting it for free is a no-brainer.
You can get more information and download here...
https://www.bandlab.com/products/cakewalk
There’s a review of the TTS-1 synth and some docs here.
https://www.soundonsound.com/techniques/exploring-sonar-4s-tts1-synth