Question: what does the song o by coldplay mean

title: O (Coldplay song)
text: `` O '' is an ambient piece at the end of the track . It begins with the same angel choir of the album opener , `` Always in My Head '' . In the song , Chris Martin can be heard repeating `` Do n't ever let go '' through a vocoder . Additional vocals from Martin 's daughter , Apple ( and her friend , Mabel ) , are featured in the song . Martin , in an interview with Zane Lowe , defined `` O '' his `` favourite piece of music made by Coldplay '' . He also stated that the song includes the message of the album : `` Never give up '' . A different version of `` O '' , called `` O ( Reprise ) '' , appears at the end of the Target deluxe edition of Ghost Stories , sold by Target only in the US , and this includes vocals from Martin 's son , Moses . This is the final track in the A Sky Full of Stars EP . This version leaves behind its synth base in favour of a Western - influenced guitar rhythm . 

Answer: answer: Chris Martin stated that the song includes the message of the album: ``Never give up''.