Tom Fletcher has written a song in tribute to his son, Buzz Michaelangelo.

The McBusted singer and his spouse Giovanna welcomed their first child into the world on March 13 and now Tom has posted the adorable track 'From Bump to Buzz' on YouTube accompanied by a black and white video which shows his wife's bump growing for nine months until Buzz was born.

In the video Tom stands opposite Giovanna holding a guitar and singing, while she's wearing a crop top to show her ever expanding bump and ends with the happy couple holding the little one in their arms.

Tom wrote on Twitter, ''Well, here it is...''From Bump to Buzz'' (sic)''

including a link to the video.

He then re-tweeted Giovanna's message: ''So... I've been busy growing a little something over the last nine months... here's our 'something new'. Xxx (sic)''

Among Tom's lyrics are the lines: ''There will come a morning you will open up your eyes, but it's what you do until that day arrives.

''You want to touch a mountain, taste the waterfall, you only have to see one, than you've seen them all.

''Gonna bet that tomorrow, that the sky is blue. I guess I'm ready, I think I'm ready, I hope I'm ready, for something new.''

The musician is adjusting to parenthood and is surprised how quickly time has flown by since Buzz was born.

He added: ''Buzz is now officially 1 week old. They grow up so fast! (sic)''