Hasle Rüegsau, formerly known as Graf Olaf, was born in the Swiss-Italian Alps and grew up in Zurich. He discovered his passion for electronic music in 1996 at the age of 15 and bought his first pair of Technics turntables in 1998.

His style is characterized by funky grooves, rolling beats, deep basslines, colorful melodies, and hypnotic harmonies. Inspired by his Turkish roots, his sets often include oriental rhythms.

Over the years, Hasle has become a well-known name in some of Zurich’s finest underground clubs. For several years, he also produced his own tracks and released them on labels such as Frieda Musik. Many productions remain unreleased.

He has also lived out his passion internationally: Hasle played in Berlin, Bangkok, and on Koh Phangan, Thailand – where he is a regular part of the vibrant underground scene during the winter season. In 2017, he founded his own label, Ensemble Music.

In addition to his work as a DJ, he has been applying his expertise as a state-certified audio engineer (EFZ HF) since 2016 in professional live sound and event production, and he regularly offers DJ courses for newcomers.

After taking a creative and academic break starting in 2017, his comeback began in 2022 with a performance on one of the Love Mobiles at the Street Parade. Today, he continues this energy with the creation of his new party label called Limmat Legends, which he founded together with friends to celebrate their shared passion for electronic music. The first event took place at Club Bellevue in Zurich and will continue on October 18, 2025, at Club Frau Rädli.

With nearly three decades of DJ experience, he knows exactly how to ignite a dance floor and keep the energy alive. Whether on the dance floor or in life – standing still is not an option for him.
.

PRODUCER, ARTIST, DISKJOCKEY 
From Skåne, Sweden 
Living In Oslo, Norway since 2011

CLUBS:
Jaeger Sunday residency 
2015-2019 - Oslo, Norway
The Villa - Oslo, Norway
Gudrun Singer - Oslo, Norway
10yrs Det Gode Selskab 2021 - Det Gamle Biblotek
Oslo, Norway 
Det Gode Selskab Sampler Release Party - MESH 2022 - Oslo, Norway
Det Gode Selskab International UFO Day - 
SALT art & music 2022 - Oslo, Norway
Karusell - Oslo, Norway
Elefant - Oslo, Norway
Det Gode Selskab Sunset lotion 2021 - 
Tårnet Kulturarena - Oslo, Norway
RAW Beats Sognsvann Forrest Party 2022 - 
Oslo, Norway
Revolver - Oslo, Norway
Dattera til Hagen - Oslo, Norway
Verkstedet - Oslo, Norway
Seeds - Oslo, Norway
Bar 100 - Oslo, Norway
Brød & Sirkus - Oslo, Norway
Storgata 26 - Oslo, Norway
Caña Rum Bar - Oslo, Norway
Pride Parade 2019 - Oslo, Norway
Sentrum Scene - Oslo, Norway
Postgirobygget - Live Stream 2020, Oslo Norway
Warm up for Sven Väth World Tour 2016 - Oslo, Norway
Rockefeller Music Hall - Oslo, Norway
Vulkan Arena New Years Eve 2016, DGS - Oslo, Norway
Oslo ClubCast DUGNAD -covid19 livestream
2020 - Oslo
Bridge To Brooklyn 2016, DGS - Oslo, Norway
Closing Frysja Art Festival 2017 - Oslo, Norway
Sirup Electric Boatparty, Solar Weekend 2013 - Oslo, Norway
Goyo&Technotribe Last Sail Out Boatparty 2013 - Oslo, Norway
Unauthorized Closing, Grottene 2014 - Stavanger, Norway
Unauthorized Bonzai Garden Klubb Sting 2014 - Stavanger, Norway
Midnight Sun Festival 2016 - Væröy, Norway
Danskultur (2017,2018) - Malmö, Sweden
Norra Grängesberggatan - Malmö, Sweden
Musikens Hus 2016 Technu - Göteborg, Sweden
After Hours Rave Technu 2016 - Göteborg, Sweden
Industrial Harbour Rave 2017 - Göteborg, Sweden
Drugstore 2017 - Belgrade - Serbia
101 club (2015,2016) - Clermont Ferrand, France
Château Perché Festival 2016 - Château de Ravel, France
Château Perché Festival 2018 - Château d'Avrilly, France
Château Perché Festival 2022 - Château d'Avrilly,
France
Square Bar 2014 - Nicosia, Cyprus  kl
Good Story (2014-2015) - Weligama, Sri Lanka


Contact:  @philipgregoryhinz

Ossian Reynolds - Musician, producer, dj, sound designer, label head and event organiser based in Stockholm, Sweden.
Here you can find a wide range of recordings from dj gigs through the years.

DJ - Copenhagen DK
Main Genres: Minimal Psy-Tech, Techy Prog, Psytrance
For booking: katzk.booking@gmail.com
UPCOMING GIGS:
2024:
22.02 Alles bleibt Anders @ Turtur, Hamburg, DE
01.02 20-year anniversaryparty, Culturebox, CPH, DK
14.09 NGBG-Festival Malmö SE
16.08 Immense-Festival, Århus DK
03.08 SRL-Årsmöte, Sjöbo SE
13.07 Høj Luft, CPH, DK
30.05 Distortion-party @ Culturebox CPH, DK
13.04 For Haus Sake @ Module CPH, DK
24.02 Black Box @ Culturebox CPH, DK
01.01 New Year Morning, Black Box @ Culturebox CPH, DK
2023:
25.11 Natmaskinen @ Module CPH, DK
02.11 Thursday Techno - Module CPH, DK
26.08 KARRUSEL-Festival CPH DK
11.08 Black Box @ Culturebox CPH DK
01.06 DISTORTION-Black Box @ Culturebox CPH DK
21.04 FUNDBUREAU Hamburg DE
11.03 Regndans @ Inkonst, Malmö SE
17.02 Natmaskinen, Copenhagen DK
14.01 MODULE Copenhagen DK
07.01 Redbox @ Culture Box CPH DK
2022:
25.12 Anomali X-mas Malmö SE
01.10 Anomali (Private) Malmö SE
24.09 Red Box @ Culturebox Copenhagen DK
17.09 TYS TYS Open Air (Private) Copenhagen DK
10.09 PRYGL Open Air (Private) - Copenhagen DK
01.07 Fusion Festival, Lärz DE
11.06 Black Box, Culturebox - Copenhagen DK
03.06 Ø.V.S.A DISTORTION - Copenhagen DK
27.05 Kunterbunt @ Waagenbau - Hamburg DE
01.05 Suedpol - Hamburg, DE
29.04 Lækker Lyd 1 - CPH, DK
02.04 Red Box @ Culture Box - CPH. DK
01.04 Fastelauster, private B'Day - CPH, DK 
26.03 Cirkus Uden Cykellygter CH Jazzklub - CPH, DK
10.03 Råstof @ Råhuset -  CPH. DK
04.03 Banana Club @ Dokken - CPH. DK
2021:
31/12 xxx
3-4/12 Monoski Klub - Verbier CH
12/11 Raveshalvøen Øenfest @  BHG44 - CPH DK
5/11 Red Box Culture Box - Copenhagen DK
8/10 Karavane 908 @ Hangaren - CPH DK
24/9 Hangaren - Copenhagen DK
26-28/8 Tribunen @ Karrusel  - Copenhagen DK
02-05/9 Re-Opening Weekend, Black Box @ Culture Box - CPH. D

AnnaNylen is following