First time using a bard.. question on this minor annoyance when selecting the party

I've never really used a bard before and I'm starting IWDEE using a Skald. One of the issues I'm having is that I typically like to often focus the entire party on one mob at a time, so I select all (hotkey A) then select the mob to attack, and then adjust other party members as needed for spells if need be etc. The issue is that I want the bard song to just keep playing which makes it annoying when I select the entire party to go after the next mob after the last one dies. How do I avoid this? I have his kit set to autoplay but that obviously doesn't help when I do a select All to attack something.
Thanks for some advice