"I'm back baby"
British singer made the revelation on her Instagram page
The London singer says she made the accompanying video on her phone
The singer and actress posted the advice-packed video message on Christmas Day
'Have Faith With Kate Nash' is streaming online now
Forthcoming musical 'Only Gold' will feature songs from all three of Nash's albums
Nash's new song 'Pink Limo Ride' was written for her friend Mika
The 'Girl Talk' singer will play eight shows including London's O2 Shepherd's Bush Empire
The 'Girl Talk' bonus track was released on red heart-shaped vinyl for Record Store Day