in the first part of the season 5 finale which is ep. 23, at the end, there was a song that has beeen on the montrer a lot of time but i never knew what it was. What song is it?

at the end of the first episode there is the song called " hold on to me " par sugarplum fées ..
but i'm not sure it is the song you're askiong for ..

The last song from 5x23 (Here's To The Future) is Hold On To Me par Sugarplum Fairies. The last song from 5x24 (Now ou Never) is Off I Go par Greg Laswell. Hope that's the one toi want