'Get on The Floor' – Louis Johnson isolated bass – 2 tracks!

I came across the ‘Get On The Floor’ session where there are two bass files. The one is called Bass_01 which is clearly a Music Man, and the second file is Bass OD_01 (overdub?) which I think were both mixed in the final cut.

The sessions took place in 1978. What do you think is the second bass? Alembic?

Bass 01 by Bart Funk | Free Listening on SoundCloud
Bass OD 01 by Bart Funk | Free Listening on SoundCloud