Getting errors with trying to create a CRUD Web Service

Hey guys, here are the errors I'm getting:

Value of type 'Integer' cannot be converted to 'music.MusicDataTable'. 
//happens at return deleteSong(...)
Value of type 'Integer' cannot be converted to 'music.MusicDataTable'.
//happens at return insertSong(...)

And this is the code, coming from the web service's vb page, where I'm getting the error:

Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols

<WebService(Namespace:="http://tempuri.org/")> _
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServi开发者_如何学JAVAces.DesignerGenerated()> _
Public Class getMusicList
     Inherits System.Web.Services.WebService

    <WebMethod()> _
    Public Function GetMusic() As music.MusicDataTable
        Dim music As New musicTableAdapters.MusicTableAdapter
        Return music.GetMusic
    End Function

    Public Function deleteSong(ByVal song_title As String) As music.MusicDataTable
        Dim music As New musicTableAdapters.MusicTableAdapter
        Return music.deleteSong(song_title)
    End Function

    Public Function insertSong(ByVal song_album As String, ByVal song_artist As String, ByVal song_file As String, ByVal song_format As String, ByVal song_size As String, ByVal song_time As String, ByVal song_title As String, ByVal song_track As Integer, ByVal song_year As Integer) As music.MusicDataTable
        Dim music As New musicTableAdapters.MusicTableAdapter
        Return music.insertSong(song_album, song_artist, song_file, song_format, song_size, song_time, song_title, song_track, song_year)
    End Function


End Class

MusicDataTable comes from a dataset called music.

The GetMusic() works because I'm not passing it anything. I'm not sure why insertSong and deleteSong aren't working. Any help would be appreciated.

apparently music.deleteSong and music.insertSong return integer. you should change the return type of deleteSong and insertSong to integer to match them.