ゲストボーカルであれば
gesutobōkarudeareba
1. If/when a guest vocalist; Provided there is a guest vocalist
Noun
1. If/when a guest vocalist; Provided there is a guest vocalist
1. guest
1. vocal (performance); vocals
2. vocalist; singer
1. Was a guest.
1. Was a guest.
1. Probably a guest.
1. Not a guest.; Is not a guest.
1. Guest's; Of a guest
1. Let's…; Shall we…