I'm think there will only be two interludes after THE introduction, just because even if THE introduction has lyrics, I don't think she'd do a lyric card for that because it wouldn't be fair for the person who got that card when 11 others got full songs. xD
I mean, I'd be happy with just an autograph, but I don't she'd do that. And if there are three interludes after THE introduction, maybe it will be a full song. An introduction could be a full song, I think.