Methods, devices, kits and compositions to treat a myocardial infarction. Electronic communication is first addressed to at least two recipients with corresponding recipient addresses. The target system is unaware that the audio device is not connected directly to the system through a physical connection, and the target system does not need special software to implement the remote audio device. An electric circuit connects the pressure sensor to an electrical connector mounted on an external surface of the guitar. A second known good packaged microelectronic device is coupled to the first device in a stacked configuration. The information processing apparatus may include recommendation information generating means for generating recommendation information for presenting a recommended content to be recommended to a user to the user, and when presenting the recommendation information to the user, changing a form of presentation of at least a part of the recommendation information.