Frontman uploads clip oh himself mouthing along to what appears to be new material from US band
Band promise they'll be premiering 'brand new Pixies songs' during the tour
It's called 'Bagboy' and it can be downloaded for free from the band's official website
Remaining band members say they are 'sad' the long-term bassist has decided to call it a day
Thriftstore Masterpiece project to release 'Trouble Is A Lonesome Town' this July
Band offer up four tracks from their 2004 Coachella live set
The iconic rockers performed over 30 songs to the Los Angeles crowd
The Bureau won't be putting out any new Pixies material though
Black Francis has recorded a new LP with songwriter Reid Paley
'Doolittle' tour to take in lesser-known venues