-- Added Import/Export collection feature

Create an object model for the following problem domain:

• There are human musicians that have names.
• There are bands that have names and more than one musician.
• A single musician can be a member of multiple bands
• Bands and musicians (artists) can publish music albums (more than one).
• Albums have a title and publication date
• Songs have a title and a duration

You need to declare classes, interfaces, and helper objects that would enable us to do the following operations:

1. Create a new musician
2. Create a new band
3. Assign a musician to a band
4. Remove a musician from a band
5. List all the musicians in a given band
6. Create a new album for a given artist
7. List all the albums for a given artist
8. Add a new song to a given album
9. List all the songs for a given album

Use the created objects to create an application that will allow us to enter at least three artists, at least one of which is a band, with at least three albums each, with at least three songs each.

Using LINQ and the data entered above, write code that will answer the following questions:

• Which artist has the longest name
• Which artist has the first recorder album
• Which artist has the last recorded album
• Which artist has most recorded albums
• Which artist has the longest song
• Which artist has the most songs?
• Which artis has the album with the most songs?
• Which artist has the longest total song duration?
• Which artist has the longest average song duration?
• In what decade were most albums recorded?
• Is there an artist that has issued more than one album in the same year?
• What is the average duration of a song?
• What is the average duration of an album?