Britney Spears 'overwhelmed' after releasing first song in six years with Elton John

Britney Spears admits she feels "overwhelmed" to have released her first piece of new music in six years.

The Piece of Me hitmaker, 40, made her musical comeback after being freed from her conservatorship with a duet with the music legend titled Hold Me Closer, a revamped version of his hit 1971 song Tiny Dancer.

Britney took to Twitter to share her excitement and nervousness about the collaboration.

"My first song in 6 years! It’s pretty damn cool that I’m singing with one of the most classic men of our time …  Elton John!" she wrote.

"I’m kinda overwhelmed … it’s a big deal to me !!! I’m meditating more and learning my space is valuable and precious !!!

"I’m learning every day is a clean slate to try and be a better person and do what makes me happy … yes I choose happiness today. I tell myself every day to let go of the hurt bitterness and try to forgive myself and others to what may have been hurtful."

"I want to be fearless like when I was younger and not be so scared and fearful. I pray there actually is truth to the Holy Spirit and I hope that spirit is with my children as well !!! Yes … I choose happiness and joy today!"

Yesterday Elton John unveiled the first snippet from the track and even surprised eager fans by playing a sneak peek of the song live on the beach for the first time - a video of which was shared on Twitter.

Last month sources told Page Six the musicians secretly met in Beverly Hills to record the new version of the beloved 1971 track, with one source revealing, "This was Elton's idea, and Britney is a huge fan. They have recorded a remix of Tiny Dancer as a full duet — and it is incredible."

Adding, "Britney was in the studio in Beverly Hills last week with Elton for the super-secret recording session overseen by uber-producer Andrew Watt."

The source also claimed the single "is going to be the song of the summer," and those who have already heard it say that "it is so good".

Listen to Hold Me Closer for yourself now: