"Wedding Bell Blues" is the first episode of the Sonic Underground television series. It first aired on 6 January 1999 in France and on 4 October 1999 in the United States. It was included in Volume 2 and The Queen Aleena Chronicles.
The song performed in this episode is "When Tomorrow Comes".
Robotnik announces that he will marry Queen Aleena in a plot to become the king of Mobius. Upon hearing the alarming news and shocked that their enemy will become their stepfather, Sonic, Manic and Sonia become suspicious that this wedding may be a trap and decide to investigate. The Hedgehogs, aided by Bartleby, are hired to play music for the ceremony. Disguised as 18th century musicians, Sonic and his siblings crash the wedding hoping to find the Queen and bring to light this most obvious sham.
- In some scenes, Sonic's arms are blue instead of tan.