This paper continues to discuss how a specific musical instrument impacts the design of practice rooms. In the previous paper six instruments (violin, clarinet, trumpet, xylophone, piano, and guitar) and a choir performance are assessed. The reverberation time (RT) is a starting acoustical consideration and the floor area is a starting architectural consideration. The rooms are simulated with the architectural variables. The anechoic recordings are used to prepare auralizations of each instrument and the choir performance for each separate room design. However, ordinary people are asked to select for the best rooms to listen/experience the rooms. In this paper, the same listening tests were done to investigate the ‘best’room preference of the professional musicians to practice. Then the musicians were also asked for their listening preference. The appropriate reverberation time and the most preferable rooms are demonstrated. One of the results of this experiment is that musicians make a clear distinction between the rooms for practicing and rooms for listening. For the practice low RT (0.45-0.9 sec) is preferred for violin, clarinet, trumpet, while high RT is preferred for choir (2-2.5 sec). For the listening experience for most of the instruments mid RT values (1.3-1.6 sec) is preferred. For all calculations and the auralizations, a computational model is used: ODEON 7.0.