Final answer:
Mick Jagger, lead singer of The Rolling Stones, is known primarily for his vocals but also occasionally plays harmonica and some guitar on various tracks.
Step-by-step explanation:
Mick Jagger is widely recognized as the charismatic lead singer of the rock band The Rolling Stones. Throughout his prolific career, Jagger has occasionally played harmonica and some guitar on various albums and songs. However, his primary instrument has always been his distinctive voice, which is a centerpiece of The Rolling Stones' sound.
Jagger is not generally known for his musical instrument proficiency, but rather his powerful vocal performances, stage presence, and songwriting contributions. His harmonica playing notably features on tracks like "Midnight Rambler" and "Miss You," while his guitar work is less prominently displayed.