Aerosol Generation from Different Wind Instruments

The potential airborne transmission of COVID-19 has raised significant concerns regarding the safety of musical activities involving wind instruments. However, currently, there is a lack of systematic study and quantitative information of the aerosol generation during these instruments, which is crucial for offering risk assessment and the corresponding mitigation strategies for the reopening of these activities. Collaborating with 15 musicians from the Minnesota Orchestra, we conduct a systematic study of the aerosol generation from a large variety of wind instruments under different music dynamic levels and articulation patterns. We find that the aerosol concentration from different brass and woodwinds exhibits two orders of magnitude variation. Accordingly, we categorize the instruments into low (tuba), intermediate (piccolo, flute, bass clarinet, French horn, and clarinet) and high risk (trumpet, bass trombone, and oboe) levels based on a comparison of their aerosol generation with those from normal breathing and speaking. In addition, we observe that the aerosol generation can be affected by the changing dynamic level, articulation pattern, the normal respiratory behaviors of individuals, and even the usage of some special techniques during the instrument play. However, such effects vary substantially for different types of instrument, depending on specific breathing techniques as well as the tube structure and inlet design of the instrument. Overall, our findings can bring insights into the risk assessment of airborne decrease transmission and the corresponding mitigation strategies for various musical activities involving wind instrument plays, including orchestras, community and worship bands, music classes, etc.

Klangforum Wien, Wien Modern, Wiener Konzerthaus, 13 November 2019

The thirty-second Wien Modern was an extraordinary month-long festival of concerts and events with almost 90 world and Austrian premieres. The excellent Klangforum Wien programme at the Wiener Konzerthaus, conducted by Bas Wiegers, was well attended by an enthusiastic and mostly young-ish audience, where the focus was two first performances for large ensemble: Klaus Lang's linea mundi and Mirela Ivičević's Sweet Dreams. The evening was, in fact, billed as being ‘in honour’ of Ivičević who had won the Erste Bank Composition Prize 2019 with this piece. Ivičević is a Croatian composer now living in Vienna and her work shows an involvement with big themes: politics, diversity and violence, among others. Apart from concert pieces she works with different media and takes by-products of popular trash culture often as a starting point for her work. In interviews she has talked about the ‘subversive potency of sound’, and said that her work is ‘raw, imperfect, unpolished’, which this piece, and other recent examples you can hear on YouTube, demonstrate, despite her quite rigorous musical education in Zagreb and Vienna. Sweet Dreams is a lively, noisy, busy piece about the rapid change between sleep and waking states. The large ensemble, including harmonium, electric guitar and harp, opens with monumental repeated sections, dramatic but with a sense of direction toward slow, strong, pedal entries. Rough punctuation from alto saxophone, bass clarinet and trumpet adds to the ‘rawness’ but the writing is assured with a particular, individual imagination and sense of colour that bodes well for future work.

Karlheinz Stockhausen, aus LICHT, Holland Festival, 31 May–10 June 2019.

Why Karl Heinz [sic] Stockhausen entitled his music for oboe, bass clarinet, piano, and four percussionists Kreuzspiel is incomprehensible. Following a system of ‘static music’, the indefensibleness of which Theodor Adorno already demonstrated the previous year to its Flemish inventor, the sound of the piece goes far beyond that which we have been accustomed to call music. That he finds a few devotees to celebrate his work … doesn't change things a jot. Every idea finds its prophets. And its sect.Albert Rodemann, Darmstädter Tagblatt, 23 July 1952.Quoted and translated in Martin Iddon, New Music at Darmstadt, 84–85. In February 1971, so the story goes, a barefooted figure with a wizard's staff handed Karlheinz Stockhausen a copy of the Urantia Book, a dense, hugely esoteric text describing the spiritual place of mankind in the universe through chapters like ‘Socializing Influence of Ghost Fear’. Most people would probably have politely thanked the figure and then escaped as quickly as possible, but this is Stockhausen we're talking about, so he devoted the rest of his life to transforming Urantia into ‘music, libretto, dance, actions and movements’, as the programme to aus LICHT credits him.

What makes music relaxing? An investigation into musical elements

Research on specific qualities of music used for relaxation has shown conflicting results. The use of different familiar or pre-composed pieces, with many simultaneous changes, might limit the ability to discriminate which musical element is responsible for the relaxation response. To address the latter, we examined the relaxing effects of music on three psychophysiological measures (heart rate, respiration rate, and skin conductance) with one original piece of music, and three modified versions (altering one musical element in each version). We investigated whether participants’ psychophysiological responses reflected a more “relaxed” state (lower heart rate, respiration rate, and skin conductance) with slower tempo (45 bpm), mellow timbre (bass clarinet), or smaller amplitude (-10 dB). We also investigated whether psychophysiological responses were consistent with self-report scores. Visual inspection of psychophysiological data indicated two distinct responder profiles, and a logistic regression confirmed this distinction. Using mixed ANCOVAs, we found significant differences between participants (responders and non-responders) in skin conductance level. No correlations between psychophysiological measures and self-reports were found. These findings raise interesting questions regarding the mechanisms behind the relaxing effects of music.