I januar 2018 udgav hun et lydspor til dramaet ''[[Jugglers]]'', med titlen "On A Good Day".<ref>{{cite web|url=http://kpopherald.koreaherald.com/view.php?ud=201801231459344485384_2|title=Gu Hara contributes to 'Jugglers' soundtrack|date=23. januar 2018|work=Kpop Herald|access-date=23. januar 2018|archive-url=https://web.archive.org/web/20180123112743/http://kpopherald.koreaherald.com/view.php?ud=201801231459344485384_2|archive-date=23. januar 2018|url-status=live}}</ref> I april 2018 var hun vært for [[JTBC]]s skønhedsshow ''My Mad Beauty Diary''.<ref>{{cite web|url=http://kpopherald.koreaherald.com/view.php?ud=201804121434325173540_2|title=JTBC's new channel to launch with beauty show|date=12. april 2018|website=Kpop Herald|access-date=12. april 2018|archive-url=https://web.archive.org/web/20180412212247/http://kpopherald.koreaherald.com/view.php?ud=201804121434325173540_2|archive-date=12. april 2018|url-status=live}}</ref> I juli blev hun udnævnt til æresambassadør for den sjette dyrefilmsfestival.<ref>{{cite web|url=http://kpopherald.koreaherald.com/view.php?ud=201807051732428165118_2|title=Goo Ha-ra named ambassador for Suncheon animal film fest|date=5. juli 2018|website=Kpop Herald|access-date=11. juli 2018|archive-url=https://web.archive.org/web/20180712023131/http://kpopherald.koreaherald.com/view.php?ud=201807051732428165118_2|archive-date=12. juli 2018|url-status=live}}</ref>
Musik