Most likely hand-lettered.

Some digital typefaces you could modify to get close to the look and feel:
http://www.myfonts.com/fonts/pelavin/hi-fi/
http://www.myfonts.com/fonts/alphabetsoup/deliscript/
http://www.myfonts.com/fonts/fdi/hooptie-script/
http://www.myfonts.com/fonts/linotype/atomatic/

A few other in the style here:
https://www.fontshop.com/people/stephen-coles/fontlists/connected-chrome...