## Abstracts
### S7. Oral Session 7: Multimodality and (e)Motions  
Session Chair: [PERSON]  
S7.1. VocalistMirror: A Singer Support Interface for Avoiding Undesirable Facial Expressions  
[PERSON], [PERSON], and [PERSON]  
We present VocalistMirror, an interactive user interface that enables a singer to avoid their undesirable facial expressions in singing video recordings. Since singers usually focus on singing expressions and do not care about facial expressions, when watching singing videos they recorded, they sometimes notice that some of their facial expressions are undesirable. VocalistMirror allows a singer to first specify their undesirable facial expressions in a recorded video, and then sing again while seeing a real-time warning that is shown when the facial expression of the singer becomes similar to one of the specified undesirable expressions. It also displays karaoke-style lyrics with a piano-roll melody and visualizes the acoustic features of singing voices. The iOS ARKit framework is used to quantify the facial expression as a 52-dimensional vector, which is then used to compute the distance from undesirable expressions. Our experimental results showed the potential of the proposed interface.  
S7.2. Audiovisual Perception of Arousal, Valence, and Effort in Contemporary Cello Performance  
[PERSON]  
Perceived arousal, valence, and effort were measured continuously from auditory, visual, and audiovisual cues using a recorded performance of a contemporary cello piece. Effort (perceived exertion of the performer) was added for two motivations: To investigate its potential as a measure and its association with arousal in audiovisual perception. Fifty-two subjects participated in the experiment. Results were analyzed using activity analysis and functional data analysis. Arousal and effort were perceived with significant coordination between participants from auditory, visual, as well as audiovisual cues. Significant differences were detected between auditory and visual channels but not between arousal and effort. Valence, in contrast, showed no significant coordination between participants. The relative importance of the visual channel is discussed.  
S7.3. Dancing Dots--Investigating the Link between the Dancer and Musician in Swedish Folk Dance  
[PERSON], [PERSON], and [PERSON]  
The link between musicians and dancers is generally described as strong in much traditional music and this holds also for Scandinavian folk music--spelmansmusik. Understanding the interaction of music and dance has potential for the development of theories of performance strategies in artistic practice and for the development of interactive systems. In this paper, we investigate this link by having Swedish folk musicians perform to animations generated from motion capture recordings of dancers. The different stimuli focus on the motions of selected body parts as moving white dots on a computer screen with the aim to understand how different movements can provide reliable cues for musicians. Sound recordings of fiddlers playing to the \"dancing dot\" were analyzed using automatic alignment to the original music performance related to the dance recordings. Interviews were conducted with musicians and comments were collected in order to shed light on strategies when playing for dancing. Results illustrate a reliable alignment to renderings showing full skeletons of dancers, and an advantage of focused displays of movements in the upper back of the dancer.