
1) Boy band
Found on
https://www.crosswordclues.com/clue/tie-break
[jazz ensemble] Tie Break is a successful and `significant` Polish jazz rock group, formed in Częstochowa in 1977. The group was formed by guitarist Janusz Iwański and the bassist Krzysztof Majchrzak, and was soon joined by flute player Grzegorz Chmieleck. The current lineup includes Janusz Iwański, Marcin Pospieszalski, Antoni Gralak an...
Found on
http://en.wikipedia.org/wiki/Tie_Break_(jazz_ensemble)

This method is used to determine the winner of a Set once the score in Games is 6-6. See Rules Of Tennis (Brief) for full details. Or see above for details of the Champions Tie Break variant.
Found on
https://www.encyclo.co.uk/local/22355
No exact match found.