You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: audio.go
    path of file: ./repos/mimetype/internal/magic
    
    the code of the file until where you have to start completion: package magic

import (
	"bytes"
	"encoding/binary"
)

var (
	// Flac matches a Free Lossless Audio Codec file.
	Flac = prefix([]byte("\x66\x4C\x61\x43\x00\x00\x00\x22"))
	// Midi matches a Musical Instrument Digital Interface file.
	Midi = prefix([]byte("\x4D\x54\x68\x64"))
	// Ape matches a Monkey's Audio file.
	Ape = prefix([]byte("\x4D\x41\x43\x20\x96\x0F\x00\x00\x34\x00\x00\x00\x18\x00\x00\x00\x
    
func Mp3(raw []byte, limit uint32) bool {
	if len(raw) < 3 {
		return false
	}

	if bytes.HasPrefix(raw, []byte("ID3")) {
		// MP3s with an ID3v2 tag will start with "ID3"
		// ID3v1 tags, however appear at the end of the file.
		return true
	}

	// Match MP3 files without tags
	switch binary.BigEndian.Uint16(raw[:2]) & 0xFFFE {
	case 0xFFFA:
		// MPEG ADTS, layer III, v1
		return true
	case 0xFFF2:
		// MPEG ADTS, layer III, v2
		return true
	case 0xFFE2:
		// MPEG ADTS, layer III, v2.5
		return true
	}

	return false
}