On May 11, 2017, Pledis Entertainment released a video teaser on Seventeen's Instagram page in preparation for Al1.[1] The video features member Vernon wandering around a deserted road with a compass in his hand. Over the next five days, twelve similar trailers, one for each member, were released on Seventeen's social media accounts. On May 16, 2017, they revealed the concept photos and track list of the mini-album on their Twitter and Instagram pages.[2][3][4] In addition, they released the highlight medley and details of the album packaging, which consisted of a photobook, 2 posters, a photocard, a postcard and a sticker.[5][6] On May 20, 2017, Seventeen released the first teaser for the title track, "Don't Wanna Cry", on their YouTube channel.[7]
^yckim124 (May 10, 2017). "Seventeen release trailer with Vernon for project chapter 1 'Alone'". Allkpop. Retrieved 2018-01-09.{{cite web}}: CS1 maint: numeric names: authors list (link)
^jennywill (May 16, 2017). "S.Coups is the final member to be 'Alone' + Seventeen drops concept photo". Allkpop. Retrieved 2018-01-09.
^jennywill (May 16, 2017). "Seventeen drops 2nd image teaser for 4th mini album 'Al1'". Allkpop. Retrieved 2018-01-09.
^KpopJoA (May 16, 2017). "Seventeen reveal official track list for 4th mini album". Allkpop. Retrieved 2018-01-09.
^yckim124 (May 17, 2017). "Seventeen drop highlight medley for 4th mini album 'Al1'". Allkpop. Retrieved 2018-01-09.{{cite web}}: CS1 maint: numeric names: authors list (link)
^"Seventeen drop highlight medley for 4th mini album 'Al1'". KPopTown. Archived from the original on 2018-01-09. Retrieved 2018-01-09.
^GhostWriter (May 20, 2017). "Seventeen release a special spot for "Don't Wanna Cry"". Allkpop. Retrieved 2018-01-09.
^"Al1 – The 4th Mini Album by Seventeen". Melon. Retrieved May 22, 2017.
^"Al1 – The 4th Mini Album by Seventeen". iTunes Store. 22 May 2017. Retrieved May 22, 2017.
