The deadline has been extended to March 15 to allow PNG musicians to produce their demos for submission.
TSF was unveiled by Wantok Musik Foundation (WMF) in early January in association with APRA AMCOS.
The annual fellowship is open to bands in PNG with a strong element of cultural expression in their work and is administered by WMF.
It is named after and in honour of the late Tony Subam, former member of the Sanguma band, which pioneered the use of traditional PNG music and songs in harmony with western music.