Well if I'm not mistaken then you can make Alexa voice queues. The music could be displayed using YouTube or Spotify (really depends on the Alexa version, think Alexa. 2 does that) and for the led, use a smart led like the ones fillips have (if I'm not mistaken) (which are compatible with Alexa).
So for the led you'll need (Phillips)
Might need smart hhb -smart hub (to connect to Alexa) https://www.amazon.com/Philips-Hue-Stand-Alone-Bridge/dp/B016H0QZ7I/ref=pd_aw_fbt_img_sccl_1/131-0880659-7806752?pd_rd_w=fkuLT&content-id=amzn1.sym.f353d175-26fc-4776-8298-842dab47b290&pf_rd_p=f353d175-26fc-4776-8298-842dab47b290&pf_rd_r=PWED1Z9M95A7RB0R7D04&pd_rd_wg=kAUSw&pd_rd_r=69482dc0-79ec-4dc3-9a4f-a9da94c40bb0&pd_rd_i=B016H0QZ7I&psc=1
Hope this helped