This year, for multichannel submissions, in addition to stereo MP3 files, we provide the option for composers to submit their work in full multichannel format, so that it can be evaluated with its intended spatial assignment to speakers. Submission in full multichannel format is optional. Composers who wish to avail themselves of this format must first submit a stereo MP3 through the SEAMUS application portal. Then, using the ID assigned to that submission, please follow the instructions in this document: Instructions for submitting multichannel pieces to SEAMUS 2015. Please direct any questions regarding multichannel submission to firstname.lastname@example.org with the text “multichannel submission” in the title.