Fleetwood Mac's "Spare Me a Little of Your Love"

Recently, the Reelin' in the Years archive uploaded a video of Fleetwood Mac performing "Spare Me a Little of Your Love," from the same 1975 concert that I've posted about before (specifically "Station Man" and "Rhiannon").  Christine McVie plays organ for roughly the first half of the song but then switches to Hohner Pianet N: