var musicians = -1;

if (musicians<1){
    console.log("not a group");
} else if (musicians ===1) {
    console.log("solo");
} else if (musicians ===2) {
    console.log("duet");
} else if (musicians ===3) {
    console.log("trio");
} else if (musicians ===4) {
    console.log("quartet");
} else if (musicians >4) {
    console.log("this is a large group");
}