This evening sees the third of three live finals to decide one winning band from the three left in the competition.
The groups going into tonight's live show are Drive, Nightfall, and Five To Five but only one can win the prize.
In tonight's show, each band will sing two songs for the first time this series before lines open for viewers to vote.
Let It Shine: Vote for free online
In order to vote for free online you first need a BBC account. If you don't have one yet you can sign up at http://www.bbc.com/register.
Then, once lines open as announced in the Let It Shine live show tonight, simply head over to the BBC website HERE to cast your vote.
You can vote up to three times for the one band you want to win in tonight's grand Let It Shine final.
Unlike past weeks, judges Gary Barlow, Dannii Minogue, Martin Kemp and - for this week - guest judge Peter Kay won't have a say in the results.
They'll of course be on hand to watch the performances but won't be needed to decide any elimination results as in the quarter and semi-finals, instead only offering their opinions.
In the Let It Shine results - which this week will be in the same show - the one band with the highest viewer votes will be declared the WINNER.
Let It Shine final airs live tonight at 6:40PM on BBC One with the performances and results together in the one show.