Control device for controlling a sound of an electric musical instrument, the control device comprising: a tread plate which is arranged to be rotatable about a first axis and is arranged to be rotatable about a second axis ; a signal generator which is configured such that it generates a first electric signal to control the sound and a second electric signal to control the sound, wherein the first electric signal is based on a rotation of the tread plate about the first axis and the second electric signal is based on a rotation of the tread plate about the second axis ; a support surface ; and a bearing which connects the tread plate to the support surface so that the tread plate is rotatable about the first axis and about the second axis , wherein the first axis and the second axis each extend parallel to the tread plate , wherein the first axis and the second axis are arranged perpendicular to one another, characterized in that i) the bearing comprises a first articulation and a second articulation , wherein the first articulation is configured such that the tread plate is arranged to be rotatable about the first axis , and wherein the second articulation is configured such that the tread plate is arranged to be rotatable about the axis , or ii) the bearing comprises a Cardan suspension with a first rotary bearing and a second rotary bearing, wherein the first rotary bearing is configured such that the tread plate is arranged to be rotatable about the first axis , and the second rotary bearing is configured such that the tread plate is arranged to be rotatable about the second axis . a tread plate which is arranged to be rotatable about a first axis and is arranged to be rotatable about a second axis ; a signal generator which is configured such that it generates a first electric signal to control the sound and a second electric signal to control the sound, wherein the first electric signal is based on a rotation of the tread plate about the first axis and the second electric signal is based on a rotation of the tread plate about the second axis ; a support surface ; and a bearing which connects the tread plate to the support surface so that the tread plate is rotatable about the first axis and about the second axis , wherein the first axis and the second axis each extend parallel to the tread plate , wherein the first axis and the second axis are arranged perpendicular to one another, characterized in that i) the bearing comprises a first articulation and a second articulation , wherein the first articulation is configured such that the tread plate is arranged to be rotatable about the first axis , and wherein the second articulation is configured such that the tread plate is arranged to be rotatable about the axis , or ii) the bearing comprises a Cardan suspension with a first rotary bearing and a second rotary bearing, wherein the first rotary bearing is configured such that the tread plate is arranged to be rotatable about the first axis , and the second rotary bearing is configured such that the tread plate is arranged to be rotatable about the second axis . i) the bearing comprises a first articulation and a second articulation , wherein the first articulation is configured such that the tread plate is arranged to be rotatable about the first axis , and wherein the second articulation is configured such that the tread plate is arranged to be rotatable about the axis , or ii) the bearing comprises a Cardan suspension with a first rotary bearing and a second rotary bearing, wherein the first rotary bearing is configured such that the tread plate is arranged to be rotatable about the first axis , and the second rotary bearing is configured such that the tread plate is arranged to be rotatable about the second axis . <EOS>