Ok - here is my metadata for the same 2 songs
But i have unique ID for both.
a469d478-ba35-42b4-b102-21418fbf6020
vs
4135c875-35b5-4b14-939b-799b3fca2922
Duration : 4mn 33s
Overall bit rate mode : Constant
Overall bit rate : 320 Kbps
Album : Greatest Hits
Album/Performer : Red Hot Chili Peppers
Part/Position : 01
Part/Total : 01
Track name : Under the Bridge
Track name/Position : 01
Track name/Total : 16
Grouping : 5
Original/Album : Blood Sugar Sex Magik
Compilation : Yes
Performer : Red Hot Chili Peppers
Performer/Sorted by : Red Hot Chili Peppers / Red Hot Chili Peppers
Publisher : Warner Bros. Records
Genre : Alternative and punk
Original/Released date : 1991
Recorded date : 1991
Writing library : LAME3.99r
BPM : 87
ISRC : USWB19901576
Country : United Kingdom
Cover : Yes
Cover description : Front Cover
Cover type : Cover (front)
Cover MIME : image/jpeg
Comment : 8A
Acoustid Fingerprint : AQADtLE2TZmRJ7hxh-jhA82D_IZmHmHyVPgmYrKLhs-OP-CJ_oGbgxwFnwnRd8PsH-3hSVmco2ny4dmQIIdDScEzKQ6-6Dj8sfiPBwiTp4mgKciZHU_040f1FI1CHlcWHH3ww3EmdMmPWM9x_EJzTDg8RicuNNHjQPsRHV3hL0Nf9BR8IC2VQ2OEXMcx5R1R8Dee4wOTJ0mDXsfxE0_iopmiZVOIST_x4D9i6tAUJmQQZlnwC0f6jjhfnDmeZ-iNMImWpTj1Az-aJQ56Ig8O7TniC82e4MpbHMFT-Idy-CQ-oUjzB1c67PAe_IWfCj-6IMwDzRviB_3h8sWu4ymo3fh9PMtB5cdf9MHxYJ7Y48ERH8mShDLqiMWjBz_6o3kW_LiR7EacSEeTs_ho4Uf4wz8qZZnxEv2HJ4L1I5TyRTizVPgR9Edz7EHz5MQN8cefY0d-wT-OXYQf5GiW8IJihRdyj9iVivAJ_saI90KvVJiegTfQ8CEqppJCNMku9HmKHUcONUsSHWkkLZnwHN_h4zzxPOhpoXmWIicOWUe8HN5SCzn03cgvw-eHKzngt8Y1PDm268Oz5OCDPQ5-PMsxZUflLAUv_MeZ6biO-TlMDucR5oe2G2GOSt5xP_jxY9-EOg14ERd3WHokTHyQ1DxyJwwq7UejEccZFsmRnnh4PHM2TIx0wnvAmMIVIK9UJEoVPJGOXxkOY8RHPCy-JMWlTMY_9CE-PDfmRviSBvmRKMlGo-xi7ArC5OiLzkKYvPiFp8GcLLLQbD4Yazl23FqD67gQkmOhhTku3TgzIynFGDuoZ_gxZSemR3rgX9D_4geXyClMhZiZC_9g68F_vMePdkbzG1_qo5QemHQLzz--4tOF_UdzG-yPh9hjNF8R_tB3BnkOPPmMWeEzHI1-MLry4C2D6_g3KDsu4NFSXKKo4IIfInF4IX-COkbzPDguT8RN_MYemkh2GtGO63gSHB_RF0_y406OxzuuoylD1FGO_USfg8mLDz_yDBo_hLmORwlu4ckFThITos-xqVOIXnrw4jp-Bk1FdA2HP_iKH2fx7ph8NI8OhkZD9biKZGON9EtQOWB1tNiFF34stDle3BZCX7AaDUc8Ajfc0Th-OIc_I-xwQjvxE8fxC4cCM_gKA4eOA_Fx4CRwGL5k_KDCM7iHY2dxicfx87j5BNMPXsgF5cklRDt9XM-IkrkG6ge6JbgW4cqWYD9yaHl-1KqJPK9QHp929Lj44Rfu466O6RqaSXgMJs8ofJ6x3Wjq43qIPOGhQcvDI6eEiWgYZ2jyHXUPbsdhxilyZg-SK-CxPbieyjj34UpuXIHP5Djxw9liYpeOLwt-0Osx90lxNEf4iUe_Q7tmXPkRlflwPRT4o3lQWvhxKVqMdbbQ5Az6RCH2HVfigMz24H_Q-KjHYugzPKGI_sgPVakR7uHxjAqa38IKVsRvjF5yw0-s4fvw5bg-pNJaIfkZHEekNEqSQ9t4ZH2FP8eMLj9-PMvRBLkOPdmRZ7GI_RsO_mjCCdOCV8cnXMuR_IaZx0buB98RxtAkbcgdPD18iQxm5vjBPXj8on0M_kim84ie5EQzHT1-48uSIpcuKE8exBcDRkl-ePqO6UnwJghzQfM_5LmCPyl-HY1wVFbx6kOeSR-Sp8nxCzsLPjmcT3h1_MO-NMGpHv1Eo1l6_MI3oz2alRbeC36Qb6OgH_ljtDhfbMe0TQkTfCGaEtXwPsIvNJeEctHQKhHSGNqRPwh_fMyhR8jxHV-Ma8aP68jh6_hxBboK48aV4zs-_NjxDHjxAi8s6-BH-Ihr_IBvPFGO65hvwtdx7mgu48evIvmQZ8efBP-PSguJhs_xSAmiD8kbKQcfon3wXMelwnWDSgd9JPuOMGOPJ4ev488xJh9OJXgu9BGSB2HOHD9-_IGPH_fxJzliLjx65Pjh4uxxOD6cKEf_Tfi0FMlzBK7C4ldwTMvRZNNwgpU2JJ82hNKD5zhzfBcaPczBLTpeIeFT5I3wHN6Dc8EYHRdT3GOJZJSSIEyNS8d3nEfzoDeOe3iiCOGzEPrxY2YfyOIspMUZzYQvnMR5RMoPPctIIs9jnBeahG1QK0QlHmG4RIHSCfl2gk-YCY_RHg8nwvxRUceLrEh4LcHxw9eOMdGCf_idEOdyJE9yhEfDAz-aof7x4ubxR0f1HB7eBsfhH_jhZKNDhJV7ITkznOiboul2_ML3w2qH8RGO7EmyI_mVyeiP_3jh7ARjHfghvsLRzArqKcfz47sU7Kkk4YdOBT6J5ziew8dz_HiyJVGFR0Kz7nhOXKkg_PD6wMvRSxeuETuI55IQUsqP9OCO5ziKyxku40zO4JiO53CKH7mMQkeO_QQrH3mkHNqNSDmJv8Ej5WgXHukO7eKRp8eFJlOOWjmOSpTR6GJwJx5uNNaCSId-5PvwH3UUBc1z_PiRJy-kMk-OHuJJog-H-zjy5sTMxTB1nDgxEuWRH8nB-Dg-PZjVfADIhFJISGQIQEQQYRBAwABgLBrAEMKEYUYQggByBgJqoARAAIYBRgAJRbxQigBhzQIMMSeEUk0II6gDyBEGAkKEQKEAAqAIBZPADgjKgBMEGQCNcgBRgCRgCBEiEBAAGsCMJkWADg2SQBHAIFEIGKQVUE4YBokwhEEBgAKCIQAMAMsI4BWRQgAFDVHAGAqUAo6hyIwxigiHBBAAKk-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
Album Artist : Red Hot Chili Peppers
ARTISTS : Red Hot Chili Peppers
ASIN : B0000C1733
BARCODE : 093624854524
CATALOGNUMBER : 9362 48545-2
EnergyLevel : 5
MusicBrainz Album Artist Id : 8bfac288-ccc5-448d-9573-c33ea2aa5c30
MusicBrainz Album Id : b2982e40-1e9a-4b39-9742-2c350c8d3226
MusicBrainz Album Release Country : GB
MusicBrainz Album Status : Official
MusicBrainz Album Type : Compilation
MusicBrainz Artist Id : 8bfac288-ccc5-448d-9573-c33ea2aa5c30
MusicBrainz Disc Id : 0A7.P1WjhX8nrbEGxLP95Xej7J0-
MusicBrainz Original Album Id : 3b05d3e3-e67f-350b-8dc3-4bedb665babc
MusicBrainz Release Group Id : fa79c7e7-ea0b-349e-ba04-0cff8e47983a
Script : Latin
Tool Name : Media Center
Tool Version : 18.0.122
Acoustid Id : a469d478-ba35-42b4-b102-21418fbf6020
DISCOGS_RELEASE :
http://www.discogs.com/release/1825031 Media Type : (CD)
Initial key : 8A
Duration : 4mn 24s
Overall bit rate mode : Variable
Overall bit rate : 789 Kbps
Album : Blood Sugar Sex Magik
Album/Performer : Red Hot Chili Peppers / Red Hot Chili Peppers
Part : 01
Part/Total : 01
Track name : Under the Bridge
Track name/Position : 11
Track name/Total : 17
Performer : Red Hot Chili Peppers
Composer : Flea/John Frusciante/Anthony Kiedis/Chad Smith
Label : Warner Bros. Records
Genre : Alternative pop/rock
Recorded date : 1991
ISRC : USWB19901576
Cover : Yes / Yes
Cover type : Cover (front) / Cover (front)
Cover MIME : image/jpeg / image/jpeg
ACOUSTID_FINGERPRINT : AQADtNcySZlxo4ePH81-JP4RJjz6jME3NIyzHCX24ASTHnUCZhd8KcX0bsXRsArhRntQyp7xZEOC8EcTcsWjSMe3o_TRvMTxHEeY5HGQTCaeKC9-HA6dHg8zXBmQ50Th2ESV5E3w7jg--Dim_CibHBeaPE6g6EeOnvC5BAd8_Ajj6UieD9fxYMqPHnxu_OAexWiexJjk4ziPJ0kboQm3TFGInjlxHleOGAkTpj2eHT8a9B2RLxfOHX_Q5ClCRdmM48fh6TieIz_65BCPMg_-hMChWTkaFFOeZMSFPkjzY1cq_PB6HH4r9OjCI_1yJLOPH00z9CibwMsf7E3AMT_IHY55vOix48kpXBGNH4ea8IFz4UmyFH_ww-_x4PiRTD-RJpFatMuMG9fRH2FG5lC3HA-eo5cMLcqNb3VwZjgOH0fdo3mJCcpCx_jxIT_hHzf84SLSHdqSZB8-rcgziZguMDn-i9iPOhUT7EnQgzeOZjmDh1eIJjf-FDuOmEimZEmionnxLFZw-MPxo3mOPkMOdXiUI-QRxqmhD_nRm2g2LS-e4xf8pXiCS8d2KeAVYU96_HjiowyPKdHBZ8YXPNRwifiDKT_R8sh5iD_CHU0e4XmO_8Gx8-jFgBd-FudKRIqSb1CPXEzxHo5OfETepUjO4fAXR_g-BqNulJEGJqWCC0eO5JOOantgRZII5wcPbDlOZrgCR0qyHPfRPLNw5niOZ8esJFEQ0z6k5AiZ8Zi7IF_hHz-aI9R14RruBxOTiAeTajmO0xi_HZ-R19DCaEd4Hrm0I6k6Y3eM5kzBPDNKNE_GBM13hEfyg7N8NIriYmKO44GtkcG9-MhxnQjD46ILxy8e5cXVwIqDOhPqH9vRPwIbHvODHmE-_Ei-4zlxzEkeXIo4ghma58Fv4Ypa7BeSyUUY4Ti14EmWBrfgPMjTIbkSPDXRVFmOXvgn4ip-7CoR6kSS3cRxHX1wEmeOK9fwfLgbPGFO9EHTJDmuYz98gdXxBI8XIuQF8QifHKeSHI8PTkqFXSsaNRqDB6UfvPgZfDm8LsPxVcFxZim-HMdWJTpeULNiPEScI1keoqKigD9K7DsOu0H7C9eOW0IoetCXwAo0eUdOFP5iHC9c40FTBbmhB-GHD8cR__ihHOYL-ICO48jxAzh5GDhBweGNH-dx7MGF18GzBzv6D7yQPEeYCX12lOymwPrB40KXJArOCeNxI_yh5VmMPKGIo1ollBNOmcg_5H9Q1cf2DLWOPwZ14rlQlxoeTLqIPCV-YRtyiviD5jDXMWAe5cGPw4zxOEgcfsjQ_JgkShY-xselHM-P5svREz-abD-mJ8fJ42C0MeNRdg92hP_gZ8ahG9V4RE8t4tOTgjuaB73x4kyyGI9ENL-Em2TQRyKu5GA3ObiP6sMUJywunBl6o8-LH0lX5DmDMxP6p5ginAK3fNiTonlErWj14Th1tGsTJItyHvlx7FNyWMsXZKXmQM8YREcj-Ci7oB3CxDr0bBfyZV-w4yf4o2KJKSvO418mxC30F2Z-5KfwPMghpiFyKQ-O5soxkTmDH9wTPD76mPiRRc6C5CIZTGFy9Di-LB5OX0jyPIgpRgye5D6YTA_6JNibHL0Qph-Snwq-J7hQBUYv4ar44OMP3auCS1SwH1dyMMknlMSdK9gdx3iTrDgN7zgvvDHuwxkXC5eJvkYYbUsl6Mhv_DiPaXAnUZi4HEWThTjz4HqC5hf6ZsZVRWgoJHvwEx_6GHoW5NNxPIzxeTiOS0WuD77x4dOhwz2e48fxYcfxFXfg46A-HZaPHw_S1Md3_DjsLMGl4NieDo8qNGeOJy-uI_mOPMvxP_ib4TrhpQpmDcmHPFJGsE-KNseZkXhL-Eb1IlH1Is_hV8MTNK1YTA-eqjuuTyl-9MqhJzn8Cz1wfWhQ_fgeXMoRS0t2lMfxI_2PL8RbOMfTHs2mH4-R50byG1vV4nlwGlXiHQ0H7gqJayGSsOGG0E_xMBgpUvjRZGqYgxy-F-IT4onw_XCP5xijC3_CFCGPhKNi9BF-PPhRPgmai_hxJsO3o1bKIMni4iKuHSWzQ5oyHfmUGRVjG0zGEK_R_kOykOOC_Dl-VGEdNKGKPj6SZV0QLzKu8OCTEtcfXOgDfy1C-Sv0HNnhXcQfHFurFY-D68vxdEOeG8mTHO2ko_mB88If-Phxk8Sfo6pYeD7OD18a_HCHF0_44dwRZgtf6LuQY099uFuMHz_hWJtxDy-yJ5GQPE9q9EIfWqjdwBQYUT_wEwk_5GhmoVaUDI8UPRivarg75D-SldHhK0F_fPgTNNxR6niIX1GJ72ieD490hKQXJDc9oYef43yGJkqlDzvOgshz4VKqHeHxgztxeEebLcWT4D6GHvnhFP8BDcexH3pCHex05FvhY7xxX3iyKEeYXUay4_5xosmSHPWO8zicVGNwRx0uo7EWRDr0I_o-_EcdRcGUMh8u5HjyCVKZJ0fhH30I3ceLPSdyLoZ54MfIozzSHwl_MDZu7NTx53ieGC_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-EAE4AAgoQBCCqjkFBGEAaAI88BBAzzwBFAFTGMEcoAAYIKAhBijADgKALGEmUNM44BkRQCTTgDGFBCCOSIYUAIADgQRjBInIAAIEGJQIoBSwRSTBMggCEGEWYZkMAIQtQQxBkgkBBACkOIUQwAowwgAjDlnDACAMGAQAQRBQgxhiHBCLDAAEodIQowpISZEQBElFPCECKEMIIoQwwHEAIDEBGEIESAAEgIQoADwglqhGKIKCEIQARAAA
ACOUSTID_ID : 4135c875-35b5-4b14-939b-799b3fca2922
RELEASECOUNTRY : US
CATALOGNUMBER : 9 26681-4
MEDIA : Cassette
URL_DISCOGS_RELEASE_SITE :
http://www.discogs.com/release/2582248 COUNTRY : United States
ASIN : B000002LQS
MUSICBRAINZ_ALBUMSTATUS : Official
MUSICBRAINZ_ALBUMTYPE : Album
ARTISTSORT : Red Hot Chili Peppers
ALBUMARTISTSORT : Red Hot Chili Peppers
BARCODE : 075992668149
MUSICBRAINZ_RELEASEGROUPID : 68bee70d-b425-3813-aca7-dd7b912c3d11
SCRIPT : Latin
PRODUCER : Rick Rubin
ENGINEER : Brendan O'Brien
ARTISTS : Red Hot Chili Peppers
MUSICBRAINZ_RELEASETRACKID : 683c0d9a-9e9f-36ad-9421-f06df4ebd1f2