1994 he joined the US Fusion Superband METRO with Chuck Loeb, Mitch Forman and Anthony Jackson.

In 1997 Haffner and his long-time colleague Roberto Di Gioia started their succesful Group "Zappelbude".

Haffner worked with many great Jazz Artists including Pat Metheny, Michael & Randy Brecker, Bill Evans, Woody Shaw, Roy Hargrove, Johnny Griffin, Cassandra
Wilson, Joe Pass, Bob James, Joe Lovano, Clark Terry, Eddie Daniels, Mc Coy
Tyner, Art Farmer, Pee Wee Ellis, Esbjörn Svensson, Joe Sample, Fred Wesley, Roy
Ayers, Hiram Bullock, Will Lee, Robben Ford... ), also with artists and Bands like Jan
Garbarek, Michael Franks, "Die Fantastischen Vier", No Angels, Wolfgang
Niedecken, Konstantin Wecker, DePhazz, Lalo Schifrin, and the WDR Big Band
Cologne.
Haffner has played Festivals around the world, such as Montreux, Paris, Chicago,
North Sea Jazzfestival, Los Angeles, Berlin, Vienna, San Diego, Geneva,
Amsterdam, Nice, Stockholm, Madrid, Oslo, Zurich, London.
He toured more than 50 countries (Argentinia, Brasil, Venezuela, Nicaragua, Chile,
Uruquay, Mexico, Peru, Bolivia Columbia, Portugal Southafrica, USA, India, Egypt,
Lebanon, Syria Italy, Jordan, Poland, Hungary, Thailand, England, Spain, Japan,
Finland, Denmark, Sweden, Norway, Latvia, just to name a few...)
In 2002 Haffner formed the Wolfgang Haffner Band which toured in Europe
featuring music of his earlier albums "Music" & "Urban Life". When not performing
with his own Band he plays with the Nils Landgren Funk Unit of sweden and with
german trumpet star Till Brönner.
Haffner has played on about 350 Recordings, including ten albums under his own
name. In spring 2004 he produced the new album of the iclandic supergroup,
"Mezzoforte".
"Zooming" is the new CD by Wolfgang Haffner on Skip Records. This album
combines acoustic Jazz and electronic Sounds featuring guest artists: Johannes
Enders (saxophone), Till Brönner (flugelhorn), Rebekka Bakken (vocals), Roberto Di
Gioia (keys), Martin Koller (guitar), Tim Lefebvre (bass), and Nils Landgren
(trombone).