Quite possibly. Though by default, the game's own version of FF7.sf2 does NOT contain the voices.
The automatic loading of lb2.sf2 as a separate file was done because back in the era of the SB AWE32/64, you were stuck with a very small amount of RAM that was loaded on the soundcard itself (it couldn't use system RAM like today's cards), and most of the SB AWE cards out there were stuck with either 512kb (typical for AWE64 cards), or 2mb, and MAYBE 4mb if you knew where to get the RAM expansions for your card. Furthermore, you were stuck with static loading, meaning when you uploaded a soundfont, you grabbed ALL of its instruments into the sound cards active memory, whether the song called for them or not -- so square decided to get around this by having the game unload FF7.sf2 and load lb2.sf2 for OWA.
Now, it should also be mentioned that square's soundfont is BLOATED to heck and back -- a majority of those samples could have been shortened without losing quality at all, and thus reducing file size. But they didn't do that, and their inefficiency at it contributed to requiring two-file workaround they used to get the lyrics in the first place.
Fixing the dynamic SF2 loading would allow FF7 to use its out-of-the box soundfonts while still getting the choir lyrics -- package a fix in with any one of the many other patches available, and now we're good to go for OWA without needing to hunt down a secondary soundfont as well, plus we don't have to be bothered to go and manually load it every time we want to play FF7. And heck, it would also solve some problems in the MIDI tab of the configurator as well (IIRC, attempting to run the MIDI test gives a "Failed" result).
