Video editing is the process of editing segments of motion video production footage, special effects and sound recordings in the post-production process. wikipedia.org

Audio editing is the process of taking recorded sound and changing it directly on the recording medium (analog) or in RAM (digital). wikipedia.org

Singing is the act of producing musical sounds with the voice, and augments regular speech by the use of both tonality and rhythm. wikipedia.org

A record producer is an individual working within the music industry, whose job is to oversee and manage the recording (i.e. "production") of an artist's music.

Video production is videography, the process of capturing moving images on electronic media (e.g., video tape, direct to disk recording, or solid state storage like a tapeless camcorder) even streaming media. The term includes methods of production and post-production. wikipedia.org

An arrangement of a musical composition is a reworking of a piece of music so that it can be played by a different instrument or combination of instruments from the original. wikipedia.org

The piano is a musical instrument that is designed to be played by means of a keyboard. Widely used in classical and jazz music for solo performances, ensemble use, chamber music and accompaniment, the piano is also very popular as an aid to composing and rehearsal. wikipedia.org

Writing is a medium of communication that represents language through the inscription of signs and symbols. wikipedia.org

A data entry clerk, sometimes called a typist, is a member of staff employed to type data into a database using a keyboard. The keyboards used can often have specialist keys and multiple colours to help them in the task and speed up the work. wikipedia.org